Helix Stadium 1.3.2 Release Notes

Helix Stadium 1.3.2 (released 2026-04-22) includes important improvements and bug fixes and is strongly recommended for all Helix Stadium users. IMPORTANT! The Helix Stadium app (macOS/Windows) has also been updated to 1.3.2; see links below.

Helix Stadium 1.3.1 (released 2026-03-26) updates the Proxy cloning source signals to improve accuracy with some target devices, especially when rolling down the input level.

Helix Stadium 1.3 (released 2026-03-24) includes 5 new Agoura amp channels from 2 new amps, Line 6's new Proxy cloning engine, additional features, improvements, and bug fixes.

New Amps in 1.3

5 new Agoura amp channels bring the Agoura channel count to 53. If you count the 111 HX channels (and you should), that's 164 amp channels total.

Amp > Matchstick 30 (Ch 1, Ch2, and Jumped channels), based on* the Matchless® DC30

Amp > Mandarin Rock 3 (Normal and Overdrive channels), based on* the Orange® Rockerverb 100 MKIII

New Features in 1.3

Proxy Cloning Engine

1.3 introduces Phase 1 of Line 6’s all new Proxy cloning engine, which lets you capture the virtual DNA of your favorite gear. The following types of devices can be cloned:

Cloning an Amp+Cab, Amp, Preamp, or Distortion

Before cloning, do the following:

• Save your current preset to retain any edited settings.

• Disconnect any MIDI and USB cables from Helix Stadium to eliminate potential noise and interference.

• Connect Stadium’s main 1/4″ or XLR OUTPUTS to a monitoring system or the PHONES jack to headphones. Turn the Volume knob to adjust the 1/4″, XLR, or PHONES Output level for monitoring.

• Ensure your audio connections are as noise-free as possible for optimal cloning. If necessary, toggle the Ground Lift on your external devices, or use a line isolator or hum eliminator to reduce ground noise.

• Before creating an Amp+Cab type clone using a microphone on a speaker cab, first set Global Settings > Ins/Outs > Mic In Phantom Power On or Off, depending on whether your microphone requires phantom power. Please refer to your mic manufacturer’s specifications for its requirements.

Tap Menu and then New Clone.

Tap the type of device you want to clone and then tap Next >.

Amp+Cab only: A dialog appears, warning you it might get loud (below left). Tap Continue. Amp only: A dialog appears, warning you to use a load box (below right). If you don't, both your amp and Helix Stadium can be damaged! Tap I Understand.

Closely follow the hookup instructions to connect your amp, preamp, or pedal to Helix Stadium and tap Next >. Note that each clone type provides different hookup instructions and there are slight differences in connections between Helix Stadium XL and Helix Stadium as well. (L-R: Amp+Cab, Amp, Preamp, Distortion.)

Depending on the type of clone, an Amp and/or Cab block may be automatically added to provide context when monitoring; these blocks are for monitoring purposes only; they are not captured as part of the clone. (For example, you probably don't want to hear an amp without a cab or a distortion pedal without both an amp and cab, but if you're playing 80s industrial songs, who are we to judge?)

Tap these block(s), choose the type of amp and/or cab, and adjust them to taste. Play your instrument and Turn the Upper Knob to adjust the Level slider so that the light green meter peaks within the dark green area. Once you have a good level, tap Next >. (L-R: Amp+Cab, Amp, Preamp, Distortion.)

The keyboard appears. Type in the name of your clone and tap Done (below left). Tap the Brand, Product, and Notes panels to add descriptive info, such as your amp’s Channel, Gain, EQ settings, intended use, groan-worthy dad jokes, and any other details for reference (below right). This info is also utilized by Stadium’s Search function.

When you're ready, tap Clone! The cloning process happens automatically, and various dialog boxes display the current status.

When cloning is complete, the Compare screen appears. Press FS11 to toggle between the original device and your new clone.

If you're happy with the clone, tap Save. A dialog tells you where to find it:

Selecting a Clone

Tap the "" file selection box to open the list of clones for that clone type. Tap a clone to select it.

Cab IRs Per Snapshot

As with Helix/HX, different Cab IRs in Stadium can now be recalled per snapshot. From the Cab IR file browser, tap Snapshot Ctrl in the sidebar.

Song Flag Automation

Previous to 1.3, recalling presets, snapshots, external amp channels, MIDI PCs/CCs, etc. behaved like a simple event sequencer; that is, the message/change was only engaged when the playhead reached the flag's location. With 1.3, select flags now behave like true automation, where Showcase knows where you are in the song and automatically recalls the proper preset, snapshot, amp channel, MIDI PC/CC, or screen without needing the playhead to pass that flag's location. This allows you to freely jump around the song and know the proper sounds and states will show up at the right times, regardless of whether a flag is at that specific location or not.

For example, say we want to recall presets and/or snapshots during the song via Marker flags. (You can also accomplish this from the Start flag or dedicated Preset/Snap flags.) In earlier versions, tapping anywhere between markers (or navigating the song with your feet) wouldn't update any messages until the playhead reached a flag's location (say, recalling a preset/snapshot from the Marker > Verse 2 flag below). With 1.3, tapping anywhere between markers (or navigating the song with your feet) will now automatically recall the proper messages that should be active at that point in the song (say, the preset/snapshot assigned to the Marker > Chorus 1 flag below).

MIDI Note Flags

MIDI flags can now generate MIDI note messages to trigger synths, samplers, or drum machines. If your band is of the ambitious variety, you could even send MIDI notes to control certain video playback devices and/or MIDI-to-DMX lighting controllers.

1. From Song view, tap Add Flag and drag a MIDI flag to the song's timeline where you want it to occur. Turns knobs 1-3 (Bar, Beat, Tick) to fine-tune its location.

2. Turn Knob 4 (Type) to "Note" and adjust the note's settings:

MIDI Recall of Playlists, Songs, and Markers

Playlists and songs can now be recalled via MIDI CC, and Stadium makes it really easy to see what messages to send.
From Song view, tap the song's name to open the Song List. The sidebar displays the MIDI CC messages used to recall the current playlist and song:

In addition, markers can be selected/cued via MIDI as well:

MIDI Control of Song Playback

Additional MIDI CCs have been added for emulating Transport mode (controlling song playback) from external devices:

Global Settings > Songs > Song Play

A new Global Setting determines what happens when playing a cued song, by either pressing the Play button, stepping on the Transport > Play switch, pressing the FS12 (Play) switch, tapping the Transport panel play icon, or now with 1.3, sending Helix Stadium a song select message (CC0, values 0-127, see MIDI Recall of Playlists and Song above). Now you can select songs without engaging playback.

Global Settings > Songs > Looper Stops With Song

A new Global Setting determines whether the Looper stops when a Song is paused or stopped. NOTE: This parameter only applies to Looper flags added to songs; manual looper control (e.g. pressing looper switches) is not affected by this setting.

Improvements/Changes in 1.3

• Helpful how-to videos have been embedded into 10 chapters of the Helix Stadium Owner's Manual. They're all meat, no filler, and after 24 minutes total, you'll be up and running with Helix Stadium. Stop doomscrolling and learn something new!

  • Top Panel and Footswitches (4:33)

  • Main Volume/Matrix Mixer (2:18)

  • Favorite Blocks (2:11)

  • Presets, Setlists, and Templates (2:50)

  • Preset Info and Clip (1:57)

  • Creating and Editing Tones (1:44)

  • Focus View (1:51)

  • Bypass and Controller Assignment (2:16)

  • Snapshots (3:05)

  • Global EQ (1:23)

• Certain Agoura amp and cab combinations are now more accurate at the top of the cab's passband (typically 3-6 kHz) and in a few cases, at a low frequency resonant peak (around 100 Hz). This does not affect any default amp/cab combinations

• Several Agoura amps have been further optimized to use less DSP

• Marker names now appear on the Song screen's ruler, which help indicate where you are in the song (see screenshot in Song Flag Automation above)

• To help avoid confusion, the Home screen's action panel's "Snapshot Bypass" item has been renamed "Snapshots Set Bypass" (It remains on by default.)

• Drag icons have been added to the Song Settings' tracks to make it obvious they can be reordered

• Helix Stadium app—Zones added to Focus view

• Helix Stadium 1.3.1—Updates the Proxy cloning source signals to improve accuracy with some target devices, especially when rolling down the input level

Bug Fixes in 1.3.2

• Proxy Server—Numerous server-based stability improvements and optimizations. (Independent of 1.3.2 firmware, but deployed since 1.3.1)

• In rare cases, dropped samples during the recording process could result in a Proxy cloning error—FIXED

• In rare cases, switching between two presets that both include poly pitch algorithm-based effects could trigger a DSP error—FIXED

• In certain instances, the list of Favorites could be limited to a fixed value—FIXED

• Selecting a different snapshot in Factory Preset > 13A Matchstick and then reselecting Snapshot 1 could result in loss of audio—FIXED

• When changing snapshots, delay repeats would behave like “Authentic," even when Global Settings > Preferences > Tap Tempo Pitch was set to “Transparent"—FIXED

• Dynamics > Deluxe Comp and Rochester Comp's Attack parameter values were inconsistent with Helix/HX SKUs—FIXED

• When changing presets, the Preset Info screen could close—FIXED

• When changing presets, the Preset Clip screen could close—FIXED

• In some cases, custom scribble labels/colors could not appear in Combo footswitch mode—FIXED

• When assigning a Proxy clone to a Favorite, a Linked Cab toggle appears—FIXED

• MIDI CC10 & CC63 messages could cause Song and Playlist selection to wrap around—FIXED

• Placing lots of MIDI flags close together could make it difficult to open a flag's action panel—FIXED

• When zoomed all the way in on a song, the Chase Song button could stop working reliably—FIXED

• When several user playlists were created, the last playlist could not be selected via MIDI CC63—FIXED

• Minor graphic bugs in the Looper > Deluxe Looper—FIXED

• Stadium Floor only: Input > Instrument's inspector header appeared as “Instrument 1”—FIXED

• Stadium Floor only: In Play view, Combo footswitch mode would not display realtime tempo changes—FIXED

• Stadium Floor only: In certain instances, loading presets could exit Play view—FIXED

• Stadium Floor only: In certain instances, multiple-assigned Stomp switches could display the previously selected preset's category icon—FIXED

• Stadium Floor only: When assigning Looper > Play/Pause to a Stomp switch, the wrong icon could appear on Play view when in Combo footswitch mode—FIXED

• In some cases, loading an original model over a Favorite model could fail when mixing UI input methods between app and hardware—FIXED

Bug Fixes in 1.3.1

• In certain instances, the login screen would display a blank QR code and the sequential code "1 2 3 4 5 6" ("That's amazing! I've got the same combination on my luggage!")—FIXED

• In certain circumstances, switching between two presets with the same mono Looper block while a loop is playing could cause a brief audio gap—FIXED

• Changing the Channel parameter on Amp > Cali 2C+ could result in an audible pop—FIXED

• If Delay > Legacy > Reverse's Time value is set to 0.0 ms, Stadium could stop passing audio—FIXED

• Setting an Input block to "None" could sometimes display the previously assigned input type's parameters in the inspector—FIXED

• If an Input block was assigned to Return 1/2, no other input block could be assigned to Return 1, Return 2, or Return 1/2—FIXED

• If a 1 Switch or Shuffling Looper is manually reassigned to a different stomp switch, switch operation could not work as expected—FIXED

• A handful of preset clips would not reset when tapping the RTZ (Return To Zero) icon—FIXED

• If a preset clip's Start and End values are set so the clip length is shorter than 5 seconds, playback could stop working—FIXED

• The preset clip's Start value could appear to overlap its End value—FIXED

• Moving a clip's End flag left and then right again wouldn't always return it to the true end of the clip—FIXED

• If many dozens of setlists, each containing many dozens of presets are created, deleting setlists and/or presets can lag—FIXED

• Saving a block as a User Model Default could turn off Snapshot Bypass (called "Snapshots Set Bypass" in 1.3)—FIXED

• In rare cases, pressing a Stomp A or Stomp B switch could engage the same switch in the other layer—FIXED

• When multiple block bypasses are assigned to a single stomp switch, the switch state could change after saving the preset—FIXED

• When FS1+FS7 is assigned to Preset Up/Down, Preset Down behavior would differ from Preset Up—FIXED

• From Combo mode, pressing FS1 or FS7 would not properly queue banks—FIXED

• From Combo mode, pressing FS1+FS7 would not enter Snapshot mode—FIXED

• Importing specific Helix/HX presets with very specific boundaries could cause Stadium to crash—FIXED

• Copying and pasting a Volume Pedal block would correctly retain default bypass and controller assignments, but they appeared as "None" in the Bypass/Control menu—FIXED

• Copying, pasting, and then clearing a block with MIDI parameter assignments could clear assignments from the first block—FIXED

• The Focus view background image for Amp > Solid 100 displayed a Depth knob, which isn't present in our version of the original amp (nor the model)—FIXED

• Quickly tapping different Mute buttons on the Matrix mixer screen could sometimes cause the visible mute state to invert—FIXED

• Enabling Snapshot control for a Command Center param can cause its value to stop changing if a subsequent parameter's Snapshot Control is enabled—FIXED

• If a stomp switch is assigned to Utility > Save, it scribble strip and switch LED would not always properly reflect the current dirty state—FIXED

• In rare cases, Stomp B mode scribble strips could display the wrong text—FIXED

• Turning Snapshot Control on and then off for select Cab > IR parameters would not disable snapshot control—FIXEDhave like “Authentic," even when Global Settings > Preferences > Tap Tempo Pitch was set to “Transparent"—FIXED

Bug Fixes in 1.3

• In certain instances, the login screen would display a blank QR code and the sequential code "1 2 3 4 5 6" ("That's amazing! I've got the same combination on my luggage!")—FIXED

• In certain circumstances, switching between two presets with the same mono Looper block while a loop is playing could cause a brief audio gap—FIXED

• Changing the Channel parameter on Amp > Cali 2C+ could result in an audible pop—FIXED

• If Delay > Legacy > Reverse's Time value is set to 0.0 ms, Stadium could stop passing audio—FIXED

• Setting an Input block to "None" could sometimes display the previously assigned input type's parameters in the inspector—FIXED

• If an Input block was assigned to Return 1/2, no other input block could be assigned to Return 1, Return 2, or Return 1/2—FIXED

• If a 1 Switch or Shuffling Looper is manually reassigned to a different stomp switch, switch operation could not work as expected—FIXED

• A handful of preset clips would not reset when tapping the RTZ (Return To Zero) icon—FIXED

• If a preset clip's Start and End values are set so the clip length is shorter than 5 seconds, playback could stop working—FIXED

• The preset clip's Start value could appear to overlap its End value—FIXED

• Moving a clip's End flag left and then right again wouldn't always return it to the true end of the clip—FIXED

• If many dozens of setlists, each containing many dozens of presets are created, deleting setlists and/or presets can lag—FIXED

• Saving a block as a User Model Default could turn off Snapshot Bypass (called "Snapshots Set Bypass" in 1.3)—FIXED

• In rare cases, pressing a Stomp A or Stomp B switch could engage the same switch in the other layer—FIXED

• When multiple block bypasses are assigned to a single stomp switch, the switch state could change after saving the preset—FIXED

• When FS1+FS7 is assigned to Preset Up/Down, Preset Down behavior would differ from Preset Up—FIXED

• From Combo mode, pressing FS1 or FS7 would not properly queue banks—FIXED

• From Combo mode, pressing FS1+FS7 would not enter Snapshot mode—FIXED

• Importing specific Helix/HX presets with very specific boundaries could cause Stadium to crash—FIXED

• Copying and pasting a Volume Pedal block would correctly retain default bypass and controller assignments, but they appeared as "None" in the Bypass/Control menu—FIXED

• Copying, pasting, and then clearing a block with MIDI parameter assignments could clear assignments from the first block—FIXED

• The Focus view background image for Amp > Solid 100 displayed a Depth knob, which isn't present in our version of the original amp (nor the model)—FIXED

• Quickly tapping different Mute buttons on the Matrix mixer screen could sometimes cause the visible mute state to invert—FIXED

• Enabling Snapshot control for a Command Center param can cause its value to stop changing if a subsequent parameter's Snapshot Control is enabled—FIXED

• If a stomp switch is assigned to Utility > Save, it scribble strip and switch LED would not always properly reflect the current dirty state—FIXED

• In rare cases, Stomp B mode scribble strips could display the wrong text—FIXED

• Turning Snapshot Control on and then off for select Cab > IR parameters would not disable snapshot control—FIXED

• If a stomp is assigned to both block bypass and select Command Center command(s), clearing the stomp would not always clear all assignments—FIXED

• In certain situations, the Home screen block, inspector, and Stomp switch could display different bypass states—FIXED

• If the same model is placed in the same path location in multiple presets, that block's inspector's apparent bypass state (or if a Delay or Modulation effect, its ms/Hz and note division toggle) could be retained in the other presets—FIXED

• If one of several screens was visible, touching a stomp switch wouldn't always jump to its assigned item—FIXED

• Copying and pasting effects auto-assigned to expression (like Wah, Pitch Wham, Volume Pedal, etc.) wouldn't always properly reflect the correct bypass state based on the current EXP 1/2 setting—FIXED

• Tuner Trails would not properly gray out when Tuner Output was set to "Processed"—FIXED

• If an external momentary switch is assigned to block bypass, assigning a Command Center command could clear the block bypass assignment—FIXED

• If a Command Center MIDI Note command's Note parameter is set to Snapshot Control, subsequent snapshot recalls could cycle between note on and note off—FIXED

• Command Center > Instant > MIDI command's Command parameter incorrectly displayed a Snapshot Control toggle—FIXED

• In rare cases, if Stadium was powered down shortly after transferring audio files, the files would not store properly and the song would exhibit no output—FIXED

• Adjusting a Hotkey flag while a song is playing could cause the UI to reboot—FIXED

• While Song view is active, snapshots could sometimes not be recalled correctly—FIXED

• In some instances, the onscreen Transport panel's pause button would require two taps to pause playback—FIXED

• If a song contained several Looper flags, looping could sometimes eventually fall out of sync with the audio, especially in songs with faster tempi—FIXED

• While a cycle is repeating a section of a song, any Looper flags between the Cycle Start and End points were ignored—FIXED

• When a Marker's Pause at Marker is turned on, any assigned preset and/or snapshot would be recalled when playback reached that Marker flag; it should only be recalled when engaging that Marker—FIXED

• After manually changing presets, cueing an Marker flag earlier in the song could sometimes not recall that Marker's preset—FIXED

• Changing a Start flag's Setlist, Preset, or Snapshot parameter was sluggish—FIXED

• If Start, Marker, and/or Preset/Snap flags appear very close together at the beginning of a song, in certain cases, a preset or snapshot recall could fail to engage—FIXED

• Selecting a preset from any Start, Marker, or Preset/Snap flag would always display them in banks of 4 (A, B, C, and D) instead of reflecting the Global Settings > Preferences > Preset Numbering value—FIXED

• From the Song List, tapping any song's End of Song icon and then pressing Song could leave the End of Song panel visible—FIXED

• If Global Settings > MIDI > Send PC w/ Preset is enabled and Start, Marker, and/or Preset/Snap flags appear very close together at the beginning of a song, the same Preset and/or Snapshot CC values could be sent twice—FIXED

• Start and Time flag Time Signatures could have a numerator set to values lower than 1, which could cause Stadium to crash—FIXED

• Adding a Utility > Tuner On or Tuner Off flag to bars 5 or 6 in a new song could cause Stadium to crash—FIXED

• Stadium Floor only—Holding FS6 (MODE) would not automatically switch to display More mode in Play view—FIXED

• Stadium Floor only—If an expression pedal is assigned to multiple parameters, assignment would not always be visible from Play view—FIXED

• Stadium Floor only—When in Play view while Combo footswitch mode was active, certain operations could cause the UI to reboot—FIXED

• Stadium Floor only—Command Center > Looper command values would not change per snapshot—FIXED

• Stadium Floor only—Pressing FS1+FS7 from Snapshot mode to enter Preset mode could disable FS6 (MODE)—FIXED

• Helix Stadium app—Editing Global EQ from the editor could not be reflected visually on the hardware's Global EQ screen—FIXED

• Helix Stadium app—In certain cases, saving a preset could cause the IR in a Cab > IR block to not load properly—FIXED

• Helix Stadium app—When importing very long impulse responses (like stupid long, like "American Pie" long), the Helix Stadium app could sometimes not truncate them properly, resulting in unpredictable behavior—FIXED

• Helix Stadium app—Saving a preset by clicking the Save icon correctly maintains the current setlist whereas saving the preset by selecting Edit > Save Preset (or pressing Alt/Command-S) would switch back to the USER PRESETS folder—FIXED

• Helix Stadium app—Changing Command Center > MIDI Note's Momentary/Latching setting from the editor would not update the same setting in the hardware—FIXED

• Helix Stadium app—Clicking the Helix Stadium icon in the dock would not automatically open a device window—FIXED

• Many other fixes and improvements