---
version: "Rev D_v1.3"
language: "en"
---
# Command Center

Helix Stadium also just so happens to be a world-class master remote control for your entire touring or studio rig. Any of its Stomp A and B footswitches (onboard or externally-connected), expression pedals (onboard or externally-connected), external triggers or contact microphones, or even its XY controller can be used to send a variety of messages to external gear---or even Helix Stadium itself! The source determines the type of available messages and includes:

* MIDI CCs to change the presets in external effects pedals, guitar amps, synths, drum machines, or even other multieffects

* MIDI Notes to trigger the sounds in synths, keyboards, samplers, or drum modules

* External Amp switching to change the channel or turn reverb on and off on a guitar or bass amplifier

* QWERTY keystrokes over USB to control practically any software in your computer (example: sending a spacebar message to start and stop your DAW, Spotify, YouTube, etc.)

* Custom preset or snapshot footswitch layouts on Stomp A and B modes, even alongside your blocks

* Custom looper layouts on Stomp A and B modes, even alongside your blocks

* Custom song transport layouts on Stomp A and B modes, even alongside your blocks

* A handful of utility functions (such as Quicksave, Mute All, and Stopwatch Start/Stop/Reset) on Stomp A and B modes, even alongside your blocks

In addition, each preset has up to 16 "Instant ![Command Center Instant source controller](https://manuals.line6.com/__attachments/a_6b71668780c19778f5a4484563524be26b2c0e8d39f922ad46e26afdbafb4a90/InstantSource.png?cb=2dcafaea82eefb14d824707822ddcc18) command" sources, used to transmit messages automatically when a Helix Stadium preset is recalled. You can even choose which command values are transmitted when a Snapshot is recalled.  
**Note:** Due to the slight differences in available Expression and Control features between Helix Stadium XL ![Helix Stadium XL devices only](https://manuals.line6.com/__attachments/a_5aed7a179e6d03e61eb84ad74e4786a3d40ba10d10c53ca39eea6ace9421d372/Icon_XL.png?cb=eb82c58bec6c3f8aaf1811bc572e962e) and Helix Stadium, the Command Center options differ accordingly.

## Assigning a Command

1. **Tap the main Menu icon** ![The Menu button.](https://manuals.line6.com/__attachments/a_a2ab61a353e5ce875590145b4db0f22e453113e316898efba9fd0bcc827af5e9/MenuButtton.png?cb=c4c1b7ff15add2da6a4ecd548c290b58) **and then Command Center** ![The Command Center menu button.](https://manuals.line6.com/__attachments/a_3a8cbf7bd2cf3ff664938c1fbcf13cbfccd2093f64ce984d7a469f3d1fca7728/Button_MenuCommandCenter.png?cb=946ab06c91bf185f31dae9ddd16961b8) **.** The Command Center appears:

![StadiumXL_MainCmdCtrScreen.png](https://manuals.line6.com/__attachments/a_bb9cc9a218fa1efb5547e188e4e379bdcc662e53d74b965c8d82dec152edd451/StadiumXL_MainCmdCtrScreen.png?cb=66d8597d0aef63b4a9d2bb8cca0ac7a0)  
![Stadium_CmdCtr_Main.png](https://manuals.line6.com/__attachments/a_73f48a597e029dbab2de50478c8dc61bae20ad448e38c6ad2840750d811bad37/Stadium_CmdCtr_Main.png?cb=b837938d1721a0c1d0ca76e93bac3e08)

2. **Tap the footswitch, pedal, or X or Y Controller axis** ![X-Axis and Y-Axis Controllers](https://manuals.line6.com/__attachments/a_98e39b0caa5d101ff664c52b3372d51675c02e35ee250ed732042e282c9df162/XY_AxisControllers.png?cb=488d6803d9c68e925813818b7d9dc3f0) **you wish to use to send the command.** To view Instant commands, **tap the** ![Command Center Instant source controller](https://manuals.line6.com/__attachments/a_6b71668780c19778f5a4484563524be26b2c0e8d39f922ad46e26afdbafb4a90/InstantSource.png?cb=2dcafaea82eefb14d824707822ddcc18) **icon** ; the 16 instant commands appear (below left)**.** To view External Controllers on Helix Stadium XL ![Helix Stadium XL devices only](https://manuals.line6.com/__attachments/a_5aed7a179e6d03e61eb84ad74e4786a3d40ba10d10c53ca39eea6ace9421d372/Icon_XL.png?cb=eb82c58bec6c3f8aaf1811bc572e962e) , **tap the** ![The External - Expression Pedal Button](https://manuals.line6.com/__attachments/a_202fce3234d1ceb53615702200fc674fa4abae229979c60e70b7df29ba0b0202/ExpPedalButton.png?cb=29dfe9012abaf17873d8549f7ab74f52) **icon**; External Controllers A, B, C, and D appear (below right).

![The Instant Command view](https://manuals.line6.com/__attachments/a_9441a9b31b3cdcb5f60931b709d138bedeee11cb2baba37e9584f0502be24ae6/InstantCommandPanel.png?cb=3fda31288f7b3f6041c43cad7a2038a9)  
![XL_ExternalControllers.png](https://manuals.line6.com/__attachments/a_72b1155d784436d75b88a1343b9e816bca19b234478a0776c07fa05df821a28c/XL_ExternalControllers.png?cb=192b382f7992a78ebe2395db5fe3f03d)  
^**\***^**Note:** External triggers, switches, and expression pedals are only available if selected from [**Global Settings \> Switches/Pedals \>**](https://manuals.line6.com/en/helix-stadium/live/global-settings.md#1b3d3cab-4eeb-4180-9df0-5bbc9f71a3fe)**Control A (Tip)** , **Control B (Ring)** , **Control C (Tip)** , and/or **Control D (Ring)** . By default, **Control A (Tip)** is set to EXP Pedal A, and **Control B (Ring)** is set to EXP Pedal B.

3. **Tap a colored box in the inspector to choose the command type for the selected source** (see below). The command's parameters appear in the inspector.

   * Not all command sources can send the same types of commands

   * A turquoise triangle ![CC_Assignment.png](https://manuals.line6.com/__attachments/a_c83cd6c06702372820fc9ef5f3bfdeccd64a731b61ae1d196060b5522c8e9333/CC_Assignment.png?cb=1a6e66586764de0a235e545010e39b4d) appears above any source with one or more commands assigned to it.

![The Command Center inspector - command categories](https://manuals.line6.com/__attachments/a_13b601368d4df3cab9c341c6f9530817a89f1a4585a97360fb00c6596de119ba/CommandCtr_InspectorCategories.png?cb=814f2a36eafb125a715dc2a45d83e7dc)

4. **Turn Knobs 1\~8 to adjust the command's settings.**

   * Stomp A and B switches, the EXP toe switch, external switches, and triggers display two tabs in the inspector (below). To create a second command, **tap the right tab and repeat steps 3 and 4 above.**

   * Each of the two commands allows an **Action** (**Action 1** and **Action 2** , respectively) to be assigned for the switch: **Press** , **Release** , **Hold** , or **Toggle** (or for triggers, **Strike** or **Toggle**).

   * If the first command's action is set to **Toggle** , the second is locked to **Toggle** and grayed out. This lets you configure something like a MIDI CC on/off assignment to a switch, where the same CC number is used for each message with two different CC values, such as 0 and 127.

![CmdCenter_InspectorTabs.png](https://manuals.line6.com/__attachments/a_0953a99e1303c64b1053ae661947162a6cc34cd49c3e8b1d1f378b7b67633b1f/CmdCenter_InspectorTabs.png?cb=407111dbd8bd4008c778b47bfb51ce2f)

### Using the Parameter Panel

Once you've selected a command category, optionally tap directly on a controller parameter within the Inspector to open it within the Parameter panel for easy editing.

* **Snapshot Ctrl:** Enable the switch to have the parameter's value stored with the preset's snapshots and sent when recalling snapshots---see the next section.

### Snapshot Control of Commands

Just as block parameters on the home screen, command parameters can also be enabled for snapshot control. When enabling snapshot control for a command parameter, the value can change per snapshot. (Action and MIDI \> Command parameters cannot be assigned).

By default, snapshot control of command parameters is disabled. To enable it:

1. **To enable snapshot control of a command parameter, press** ***and turn*** **the parameter's knob.** Its value turns white (below left). Alternatively, **tap the parameter to open the parameter panel, and in the sidebar, tap the Snapshot Ctrl toggle** ![SnapshotCtrl_On.png](https://manuals.line6.com/__attachments/a_872633a36253192c42d9a4b255cb7da4f638349e6bddd38e74ca9f2ed2723086/SnapshotCtrl_On.png?cb=577362f4bdad8dfbf19f3b40b5eb82d8) **on**(below right).

![Stadium_SnapshotCommand.png](https://manuals.line6.com/__attachments/a_d86b92cf4dcbeea02b155188b1da6967f6962448a5db0df6395bf867e10e1c9f/Stadium_SnapshotCommand.png?cb=10c953af611d7ace204e173bc05ef362)  
![CmdCtr_ParameterPanel.png](https://manuals.line6.com/__attachments/a_b465e536ba53148f14206005261149c78b307e79d6cd363d9bd8a9ccb15c19cb/CmdCtr_ParameterPanel.png?cb=270f2180b6e01fac214fcee2e8c040a5)  
**Note:** An Instant ![Command Center Instant source controller](https://manuals.line6.com/__attachments/a_6b71668780c19778f5a4484563524be26b2c0e8d39f922ad46e26afdbafb4a90/InstantSource.png?cb=2dcafaea82eefb14d824707822ddcc18) command is automatically sent on preset recall. An Instant command's values can also change upon snapshot recall by enabling the Snapshot Control, as described above.

### Source Controller Types

The type of available messages is determined by the source. Also see the [**Commands**](https://manuals.line6.com/en/helix-stadium/live/command-center.md#command_center_command_types) section below.  

|                                                                                                                                                                                  **Controller**                                                                                                                                                                                   |                                                                            **Supported Commands**                                                                             |                                                                                                                                                                                                                                                                                      **Notes**                                                                                                                                                                                                                                                                                      |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| |
| ![Command Center Stomp footswitch](https://manuals.line6.com/__attachments/a_75a26ca59478c91dc908bae88ea79d505cdfd58d810c5e2c985ec9c29281fc65/StompFootswitch.png?cb=064926ba8c46385546a6c2a76c57e620) **Stomp A and Stomp B switches**                                                                                                                                                                    | Support assignment of all command types. Up to two commands can be assigned per Stomp switch. **Note:** Command Center assignments cannot be made to FS6 (Mode) or F12 (TAP). | These are the physical footswitches on your Stadium device. Assignments can be made on both the Stomp A and Stomp B mode switches.                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| ![The Command Center Expression Pedal source.](https://manuals.line6.com/__attachments/a_59063e08c3b9f664f1f2dcd582fd917d1787608c9c2f47b2262090e4e6db571d/EXPPedal.png?cb=39927b814a594af0b1c92e8292242884) **Expression Pedals**                                                                                                                                                                          | Support assignment of **MIDI CC** commands only. One command can be assigned per pedal.                                                                                       | **Helix Stadium XL** ![Helix Stadium XL only](https://manuals.line6.com/__attachments/a_5aed7a179e6d03e61eb84ad74e4786a3d40ba10d10c53ca39eea6ace9421d372/Icon_XL.png?cb=eb82c58bec6c3f8aaf1811bc572e962e) includes an onboard expression pedal and up to four external expression pedals. **Helix Stadium** supports up to two external expression pedal controllers. Note that you'll need to set the respective [**Global Settings \> Switches/Pedals** **\>**](https://manuals.line6.com/en/helix-stadium/live/global-settings.md#1b3d3cab-4eeb-4180-9df0-5bbc9f71a3fe)**Control A\~D** jack to "EXP In" for each connected pedal. |
| ![ToeSwitch.png](https://manuals.line6.com/__attachments/a_6d1f611be5ab8e1a955643da31e7cba73445ca858fff24a8bbd3a1f7ca0e50a9/ToeSwitch.png?cb=e7384a54a2cc1fe68dd41652126259b5) **Toe Switch -** ![Helix Stadium XL only](https://manuals.line6.com/__attachments/a_5aed7a179e6d03e61eb84ad74e4786a3d40ba10d10c53ca39eea6ace9421d372/Icon_XL.png?cb=eb82c58bec6c3f8aaf1811bc572e962e)                                                | Supports assignment of all command types. Up to two commands can be assigned.                                                                                                 | This is the switch that is toggled via the Helix Stadium XL ![Helix Stadium XL only](https://manuals.line6.com/__attachments/a_5aed7a179e6d03e61eb84ad74e4786a3d40ba10d10c53ca39eea6ace9421d372/Icon_XL.png?cb=eb82c58bec6c3f8aaf1811bc572e962e) onboard Expression Pedal.                                                                                                                                                                                                                                                                                                                                   |
| ![X-YAxisSources.png](https://manuals.line6.com/__attachments/a_820b689418ad39feb23351bc65544c564ea27f874f58136a8f3138b30c536d70/X-YAxisSources.png?cb=879e4d1da87250e74648efff4d39328e) **X-Axis and Y-Axis**                                                                                                                                                                                             | Support assignment of **MIDI CC**commands only. One command can be assigned for each of the X-Axis and Y-Axis controllers.                                                    | These allow you to use the Stadium ![Button_XY.png](https://manuals.line6.com/__attachments/a_2742d321b65f84a6266941f4ad03b02168c8380bfd46041018e9b3791510c39e/Button_XY.png?cb=8bb9c1376df2b84e354a4f2bef4db721) [**XY Controller**](https://manuals.line6.com/en/helix-stadium/live/bypass-and-controller-assign.md#377e08e1-7fcb-493f-86d4-0b9867d8d8cf) screen as a touch-pad expression controller, where sliding your finger left and right (X axis) or up and down (Y axis) sends CC messages.                                                                                                                                 |
| ![Command Center Instant source controller](https://manuals.line6.com/__attachments/a_6b71668780c19778f5a4484563524be26b2c0e8d39f922ad46e26afdbafb4a90/InstantSource.png?cb=2dcafaea82eefb14d824707822ddcc18) **Instant 1\~16**                                                                                                                                                                            | Support assignment of all command types except **Preset/Snap** and **Utility**.                                                                                               | Instant Commands are transmitted automatically when a preset is recalled and, optionally, when a snapshot is recalled (assuming the parameter's Snapshot Control is enabled in the Parameter Panel).                                                                                                                                                                                                                                                                                                                                                                                |
| ![ABCD_Source.png](https://manuals.line6.com/__attachments/a_9b5cd2c5953dbf464a9f82bf32ed1c8a020d8bac65381698053079e02fe13e13/ABCD_Source.png?cb=0e5c301a87c5e0a362e65988a9266520) **External Stomp Switches A/B** **External C/D Switches -** ![Helix Stadium XL only](https://manuals.line6.com/__attachments/a_5aed7a179e6d03e61eb84ad74e4786a3d40ba10d10c53ca39eea6ace9421d372/Icon_XL.png?cb=eb82c58bec6c3f8aaf1811bc572e962e) | Support assignment of all command types. Up to two commands can be assigned per switch.                                                                                       | Much like Stomp A and B Footswitches, external switches can be assigned to any Command Center commands.                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| ![Trigger controller](https://manuals.line6.com/__attachments/a_2f29e8cacaa03e078378b12d898c5d2556d4a8b10f1a6004fda4bd36c915cd08/Trigger.png?cb=6dc28efab102d70c8de85ed10bd82b53) **Triggers A/B** **Triggers C/D -** ![Helix Stadium XL only](https://manuals.line6.com/__attachments/a_5aed7a179e6d03e61eb84ad74e4786a3d40ba10d10c53ca39eea6ace9421d372/Icon_XL.png?cb=eb82c58bec6c3f8aaf1811bc572e962e)                          | Support assignment of all command types. Up to two commands can be assigned per switch.                                                                                       | Typically used to send MIDI commands to trigger drum hits or sample playback, but can be assigned to two of any command types.                                                                                                                                                                                                                                                                                                                                                                                                                                                      |

## Commands

### ![Command Center Preset-Snapshot category button](https://manuals.line6.com/__attachments/a_e2bf98d3bb1d5d7848eb1537c547580b75340e9409d6e3edae75d9eceb2bcf53/CC_Preset-SnapButton.png?cb=a13782a5c003224a1b4064d8c027742e) Preset/Snap Commands

Preset/Snap commands are supported by all sources *other than* instant commands, expression pedals, and X/Y controllers, and are often used to map presets or snapshots to Stomp A and B switches.  
![Preset-Snapshot Settings](https://manuals.line6.com/__attachments/a_74733996bc7971c7361ccff2ed0674d10f4bcb4ff312995255fe1c1949fb0307/Preset-SnapSettings.png?cb=42079e7c31aed49f0edc3088f153b9f4)

* When **Preset** or **Snapshot** type Commands are selected, additional options are available to choose the target Preset/Snapshot.

  * When the **Preset** command type is selected, you can choose the **Setlist** (via Knob 3) and the **Preset** within that Setlist (via Knob 4).

  * When the **Snapshot** command type is selected, you can choose the desired Snapshot via Knob 3.

  * When assigned to a Stomp A or B footswitch, the Stomp Mode footswitch label displays the preset's or snapshot's number and name.

Click here to show Preset/Snapshot command settings...  

|              **Parameter**               |                                                                                                  **Description**                                                                                                  |
|------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Action**                               | Selects the action for which the switch's assigned command is executed: On Press, on Release, when Holding the switch down, on the Strike of a trigger (Trigger sources only), or as a Toggle between two values. |
| **Command**                              | Chooses the type of command to be assigned to the selected switch. Different settings become available depending on the command you select here.                                                                  |
| **Setlist (Command set to "Preset")**    | Selects the setlist folder where the preset you wish to load is located.                                                                                                                                          |
| **Preset (Command set to "Preset")**     | Selects which preset from the selected setlist is loaded.                                                                                                                                                         |
| **Snapshot (Command set to "Snapshot")** | Selects which snapshot is loaded.                                                                                                                                                                                 |

### ![The Command Center Song command category button](https://manuals.line6.com/__attachments/a_6bd8ecfa6c0d0495609613f2d254ed95fa0185d3437947419525ca7f747fc8fe/CC_SongButton.png?cb=219f782383f45345d8e36ea891c4d5f1) Song Commands

The Song command category is supported by all source controller types *other than* expression pedals or X-Axis/Y-Axis controllers. This category includes Song View commands to control song transport functions, navigate between existing songs, or select markers within the current song. This can be a convenient way to load and play songs directly from your preset, without having to change to the dedicated Song View screen.

#### Song Settings

Selecting the Song command category displays the **Action** and **Command** settings to choose the type of Song command(s) you wish to assign to the selected switch.  
![CmdCtr_SongParameters.png](https://manuals.line6.com/__attachments/a_226d16452ef4a16b89ac46d98d63c8908d2362c5bc71dd46e0f1ce8804269063/CmdCtr_SongParameters.png?cb=69b4b86e3d5f50caeed2a43f7b49e344)

When assigned to a Stomp A or B footswitch, the Song Command type is displayed for the Stomp Mode footswitch label.
Click to view Song Command settings...  

| **Parameter** |                                                                                                                                                                                **Description**                                                                                                                                                                                |
|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Action**    | Selects the action for which the switch's assigned command is executed: On Press, on Release, when Holding the switch down, on the Strike of a trigger (Trigger sources only), or as a Toggle between two values.                                                                                                                                                             |
| **Command**   | Selects the type of Song command to be assigned to the selected switch.                                                                                                                                                                                                                                                                                                       |
| **Wait**      | Appears for Instant commands only. Determines how long Helix Stadium waits after a preset recall (or if snapshot control is enabled, after a snapshot recall) before the command is sent. Normally, you can keep at the default 0 ms setting. If your Song command is not consistently triggering, try increasing this Wait value slightly to see if that resolves the issue. |

### ![The Command Center Looper command category button](https://manuals.line6.com/__attachments/a_0b65262cc8d9407c0a8d949a76d099fec724d0bd6fa2075fd59950fd7a89170d/CC_LooperButton.png?cb=9c2a38faa4e865899bfe4a7d7603152a) Looper Commands

Looper commands are supported by all sources *other than* expression pedals and X/Y controllers and are often used to map Looper functions to Stomp A and B switches. Although from Instant commands, they can also be used to automatically engage a looper function when recalling a preset or snapshot.  
![CommandCenter_LooperCmds.png](https://manuals.line6.com/__attachments/a_29a8d46cea865df2d04192bcb789e8c8ff213a020102774dd6177321c05d0695/CommandCenter_LooperCmds.png?cb=32b046bff11d62eb539181ef89983e54)
Click to show/hide Looper Command settings...  

| **Parameter** |                                                                                                  **Description**                                                                                                  |
|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Action**    | Selects the action for which the switch's assigned command is executed: On Press, on Release, when Holding the switch down, on the Strike of a trigger (Trigger sources only), or as a Toggle between two values. |
| **Command**   | Selects the type of Looper command.                                                                                                                                                                               |
| **Wait**      | Appears for Instant commands only. Determines how long Helix Stadium waits after a preset recall (or if snapshot control is enabled, after a snapshot recall) before the command is sent.                         |

### ![The Command Center Utility command category button](https://manuals.line6.com/__attachments/a_d79d9ae884b31cba5ab62c4c12a27e4d7944d801a85a1eeb848cf08a4c41bb25/CC_UtilityButton.png?cb=eb2ac1f6d1143d99774b81825a6145a5) Utility Commands

Utility commands are supported by all sources *other than* Instant commands, expression pedals, and X/Y controllers, and are often used to map select More mode functions to Stomp A and B switches.  
![CommandCenter_UtilityCmds.png](https://manuals.line6.com/__attachments/a_758d1bb5173fbf8c03ae2ab3fc7c2d2bba5e2bd2c0d294dd6edc1d47f20c5fc0/CommandCenter_UtilityCmds.png?cb=114cd3e3eafeb623ad750f54866e2be6)
Click to show/hide Utility Command settings...  

| **Parameter** |                                                                                                                                                             **Description**                                                                                                                                                             |
|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Action**    | Selects the action for which the switch's assigned command is executed: On Press, on Release, when Holding the switch down, on the Strike of a trigger, or as a Toggle between two values.                                                                                                                                              |
| **Command**   | Selects the type of Utility command to be assigned to the selected switch. * **Save:** Engages preset quicksave, instantly overwriting the current preset's settings. * **Mute All:** Mutes all Helix Stadium audio outputs. * **Stopwatch:** Repeated presses start and stop the stopwatch. Pressing and holding resets the stopwatch. |

### ![The Command Center External Amp command category button](https://manuals.line6.com/__attachments/a_d7278f798617e66c44f6569e33903c84b46498f8be4342fa2ee1ec6eefce25e6/CC_ExtAmpButton.png?cb=4bed646ef052c226ae6c37692fb2a285) Ext Amp Commands

Ext Amp commands are supported by all sources *other than* expression pedals and X/Y controllers and are used to change the channel or turn the reverb on and off in your external amp.  
**Note:** Configuring an **Ext Amp** assignment also requires that the respective [**Global Settings \> Switches/Pedals**](https://manuals.line6.com/en/helix-stadium/live/global-settings.md#1b3d3cab-4eeb-4180-9df0-5bbc9f71a3fe) **\> Control A\~D** jack setting is set to "Ext Amp" to allow the jack to route the command signal out.  
![CommandCenter_ExtAmpInspector.jpg](https://manuals.line6.com/__attachments/a_60334b5a19ca4911bac89624691e5f0b0906bd00eeace19875802bd0626fc1cc/CommandCenter_ExtAmpInspector.jpg?cb=dbfe8f718a08428464e1c70c5ac1f48d)  
**Important!** Send Ext Amp commands only to amplifiers that utilize "short-to-sleeve" footswitch inputs. Connecting to any other sort of input could cause permanent damage to both your amp and Helix Stadium! If you're unsure whether your amp has short-to-sleeve inputs, please contact the manufacturer.

Helix Stadium's ability to control external amp channel, reverb, and/or tremolo switching has been tested with many popular amps and heads. Unfortunately, this does not guarantee compatibility with all products. Depending on the channel switching jack's circuitry in the guitar amp used, the Ext Amp function may not operate as expected.
Click to show/hide External Amp Command settings....  

| **Parameter** |                                                                                                                                                                                                                                              **Description**                                                                                                                                                                                                                                              |
|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Action**    | Selects the action for which the switch's assigned command is executed: On Press, on Release, when Holding the switch down, on the Strike of a trigger, or as a Toggle between two values.                                                                                                                                                                                                                                                                                                                |
| **Select**    | Selects the Stadium control output jack and conductor connection on which the Ext Amp toggle command is sent. Choose "Tip" or "Ring" to send the Ext Amp switch signal out only to this respective conductor of the TRS output jack. Choose the "A and B" (or "C and D" ![Helix Stadium XL only](https://manuals.line6.com/__attachments/a_5aed7a179e6d03e61eb84ad74e4786a3d40ba10d10c53ca39eea6ace9421d372/Icon_XL.png?cb=eb82c58bec6c3f8aaf1811bc572e962e) ) to send the signal to both the Tip and Ring conductors of the jack. |
| **State**     | Appears for Instant commands only. Determines whether recalling the preset (or, if snapshot control is enabled, recalling the snapshot) changes the state of the signal sent to the amp---open or close.                                                                                                                                                                                                                                                                                                  |
| **Wait**      | Appears for Instant commands only. Determines how long Helix Stadium waits after a preset recall (or if snapshot control is enabled, after a snapshot recall) before the command is sent.                                                                                                                                                                                                                                                                                                                 |

### ![The Command Center MIDI command category button](https://manuals.line6.com/__attachments/a_1f1a30155b117afc503ccf1e4cd6e0c9684db64fa35eefb32ed3352df3febaa3/CC_MIDIButton.png?cb=f6c71b7d6a8dbdcd758ccc3ab3a640a6) MIDI Commands

MIDI commands can be assigned to a source depending on the MIDI Command type selected (see Notes in the table below).  
**Note:** By default, MIDI type Command Center messages are transmitted via the 5-pin MIDI OUT and USB MIDI OUT simultaneously. You can customize MIDI behaviors using the [**Global Settings \> MIDI**](https://manuals.line6.com/en/helix-stadium/live/global-settings.md#globals-midi) options.  
![MIDI Settings](https://manuals.line6.com/__attachments/a_eac43350d5dd549f15fd6f5364e8693d3b50ef1cbe7339301e5ad58b1be30555/MIDISettings.png?cb=7c94996f75098662517925bf3cd71d76)
Click to show/hide MIDI Command settings...  

|                         **Parameter**                         |                                                                                                                                                                                                                                                                                                                         **Description**                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------| |
| **Action**                                                    | Selects the action for which the switch's assigned command is executed: On Press, on Release, when Holding the switch down, on the Strike of a trigger, or as a Toggle^\*^ between two values. ^**\***^**Note:** When selecting Toggle in the left tab, the right tab's Action parameter is automatically also set to Toggle and becomes non-selectable. This allows you to set the second value for your MIDI Toggle command within the right tab.                                                                                                                                                                                                             |
| **Command**                                                   | Selects the type of MIDI message to be sent. Note that not all sources can send the same messages. Parameters differ slightly depending on the Command type you select here, as indicated int he following descriptions.                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| **MIDI Channel**                                              | Selects the MIDI Channel on which the message is transmitted.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| **Bank MSB (CC00)**(when Command is set to "Bank/Prog")       | Sets the Bank MSB (CC#00) value. Select "Off" if the receiving device shouldn't respond to Bank MSB.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| **Bank LSB (CC32)**(when Command is set to "Bank/Prog")       | Sets the Bank LSB (CC#32) value. Select "Off" if the receiving device shouldn't respond to Bank LSB.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| **Program Change**(when Command is set to "Bank/Prog")        | Sets the Program Change value to be sent with the Bank/Program message---to load a specific preset within the selected Bank. Select "Off" if the receiving device shouldn't respond to PC.                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| **CC#**(when Command is set to "CC")                          | Sets the CC number to be sent.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| **Value**(when Command is set to "CC")                        | Sets the CC Value to be sent along with the selected CC number. Note that you can configure two MIDI CC assignments on a single switch, each with the same CC number, but two different values to "toggle" between them, such as for On/Off parameters, or to set a knob parameter to two different values.                                                                                                                                                                                                                                                                                                                                                     |
| **Min Value** (when Command is set to CC: EXP pedals and X/Y) | Sets the minimum CC value, such as the "heel" value of an expression pedal.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| **Max Value**(when Command is set to CC: EXP pedals and X/Y)  | Sets the maximum CC value, such as the "toe" value of an expression pedal.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| **Note**(when Command is set to Note On)                      | Sets the MIDI note value (C-1 \~ G9). Middle C is C3. The Note On Command sends a Note On followed by a Note Off message. **Note:**Line 6 follows Yamaha's MIDI note spec, where middle C is "C3" (unlike some other gear manufacturers that prefer to say middle C is "C4").                                                                                                                                                                                                                                                                                                                                                                                   |
| **Velocity**(when Command is set to Note On)                  | Sets the MIDI note's velocity.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| **Note Off**(when Command is set to Note On)                  | Determines whether the MIDI note sustains until pressing the switch again and then sends the Note Off message (Latching) or sustains only while the switch is held, and sends the Note Off message on switch release (Momentary). **Note:** Footswitch behavior (latching or momentary) is determined per footswitch, not per assignment. Therefore, it is not possible to combine multiple assignments or commands with opposing behavior types on a single footswitch controller. This parameter is not available for the Instant Command - MIDI - Note On command. For an Instant command, a Note Off message is immediately sent after the Note On message. |
| **MMC**                                                       | Determines the MIDI Machine Control (MMC) message sent. These commands can be used to control transport functions on external devices or apps that support MMC.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| **Wait Time**                                                 | Appears for Instant commands only. Determines how long Helix Stadium waits after a preset recall (or if snapshot control is enabled, after a snapshot recall) before the command is sent.                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |

### ![The Command Center Hotkey command Inspector button](https://manuals.line6.com/__attachments/a_3350a57350bb5574c0f819ea31b6395d8683f7f6124934916bf954b1ba4cf529/CC_HotKeyButton.png?cb=b514ba7bfcb06ecff8e3e73127de19f0) Hotkey Commands

Hotkey commands are supported by all sources *other than* expression pedals and X/Y controllers. QWERTY hotkeys (computer keyboard shortcuts with or without modifiers, such as Shift, Control, Option/Alt, and Command) can be sent to your Mac, PC, or iOS device via USB, letting you control virtually any DAW, YouTube^™^, Spotify^®^, looping software, DJ software, lighting software, and more.

Hotkeys can be assigned to any Stomp A or B footswitch---or Instant command, where they're automatically sent upon preset recall (or if assigned to snapshot control, snapshot recall). Although you can edit commands from Helix Stadium's UI, it's much easier to type in the hotkey keystrokes from the *Helix Stadium* app.  
![HotKey Settings](https://manuals.line6.com/__attachments/a_2f3b96e389a6040675a33278bce1f6bc440bcfc7957a77e36bdd7864f9611add/HotKeySettings.png?cb=5efca9b905bff5ef0cca2eee4f1c8d40)
Click to show/hide Hotkey Command settings...  

| **Parameter**  |                                                                                                     **Description**                                                                                                     |
|----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Action**     | Selects the action for which the switch's assigned command is executed: On Press, on Release, when Holding the switch down, on the Strike of a trigger, or as a Toggle between two values.                              |
| **Modifier 1** | Sets up to three key modifiers to be sent with the keystroke. The "Mac/PC" option corresponds to the "Command" key on macOS systems and the "Windows" key on Windows systems. Choose "None" if no modifier is required. |
| **Modifier 2** | Sets up to three key modifiers to be sent with the keystroke. The "Mac/PC" option corresponds to the "Command" key on macOS systems and the "Windows" key on Windows systems. Choose "None" if no modifier is required. |
| **Modifier 3** | Sets up to three key modifiers to be sent with the keystroke. The "Mac/PC" option corresponds to the "Command" key on macOS systems and the "Windows" key on Windows systems. Choose "None" if no modifier is required. |
| **Keystroke**  | Sets the alpha, numeric, or other computer keyboard key value to be sent.                                                                                                                                               |
| **Wait Time**  | Appears for Instant commands only. Determines how long Helix Stadium waits after a preset recall (or if snapshot control is enabled, after a snapshot recall) before the command is sent.                               |

### Command Center \> Action Panel

1. **On the Command Center screen, tap the selected source.** Its Action Panel appears:

![Command Center Action Panel.png](https://manuals.line6.com/__attachments/a_33f42fe094585d10a753b3fee38598dbbfa5ba5f3937a837081c98203538b062/Command%20Center%20Action%20Panel.png?cb=e332b7e3f90d14f30be8699ffdbfe757)

* **Copy Command:** Copies the command (or for dual commands, both) to the clipboard for pasting onto a different source, even in a different preset.

* **Copy All Commands:** Copies all commands in the preset to the clipboard. This is useful for opening a different preset and then using **Paste All Commands** to apply the full set of copied commands to it.

* **Paste Command/Paste All Commands:** After you've used the **Copy Command** to copy an individual controller's commands, select the desired target controller (within the same or different preset) and tap **Paste Command** . Note that only commands supported by the target controller can be pasted. After you've used the **Copy All Commands** to copy an entire preset's set of Command Center assignments, load the desired target preset, select any controller within the Command Center window to display the Action panel again, and select **Paste All Commands**. All commands are pasted into the new preset.

Using **Paste Command** or **Paste All Commands** will overwrite existing assignments for the selected target controller(s).

* **Clear Command:** Select any controller that includes one or two command assignments. If the controller contains two command assignments, tap the command's Inspector tab for the assignment you wish to clear first. Tap the controller to display the Action panel, and tap **Clear Command** to remove the selected command assignment only. Repeat, if desired, to remove the remaining command.

* **Clear/Reset All:** Clears all Command Center assignments from all sources in the current preset.

* **Label/Color:** (Selectable for any Stomp A or B Footswitch controller.) Lets you relabel any Stomp A or B [**Stomp Footswitch Mode**](https://manuals.line6.com/en/helix-stadium/live/top-panel-and-footswitches.md#0e1bbb7d-6368-4056-89a7-94f3630b5291) label and LED color. See the next section.

### Customizing a Command's Label and Color

Double-tap an assigned Stomp A or Stomp B controller within the Command Center screen to display the pop-up Action menu (see preceding section).^\*^ Here you can customize a Stomp Mode footswitch's assignment label and/or LED ring color.

1. Tap the selected Stomp A or Stomp B source. The Action panel opens.

2. Tap **Label/Color** . A keyboard appears. **Enter the new label.**

3. **Tap the desired color swatch.** **Auto** matches the default color for the footswitch LED, and **Off** disables the LED.

4. **When finished, tap** ![Done](https://manuals.line6.com/__attachments/a_eccced81c437f3297791174a8c51692c80cb3a42d7087cc7c4ec45391df35cef/e5c17e93-37c2-49c3-82af-5acda5953fb6?cb=e698eedd8e5390b35bc4ae3ffee2205e) **.**

^**\***^**Note:** **Preset/Snap, Looper, and Utility** commands do not allow custom labels or colors.