MatchPatch device candidates

[noseglasses]

Candidate Devices for MatchPatch Support

Evaluation Criteria

Criterion	Why it matters
Snapshots / Scenes	Per-sound normalization inside a preset
USB preset/scene switching	Fully automated measurement workflow
USB audio I/O	Automated reamping and loudness analysis
Editable preset files	Programmatic gain compensation
Community openness	Easier reverse engineering and contributions

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Highly Attractive Targets

Device Family	Snapshots / Scenes	USB Audio I/O	Remote Control via USB/MIDI	Preset File Accessibility	MatchPatch Potential
Line 6 Helix Floor / LT / Rack	8 Snapshots	Excellent	Excellent	.hlx JSON, .hls setlists	⭐⭐⭐⭐⭐
Line 6 Helix Stadium / Stadium XL	8 Snapshots	Excellent	Excellent	.hsp JSON presets, .hss compressed JSON setlists	⭐⭐⭐⭐⭐+
Fractal Axe-Fx III	8 Scenes	Excellent	Excellent	.syx SysEx files	⭐⭐⭐⭐☆
Fractal FM9	8 Scenes	Excellent	Excellent	.syx SysEx files	⭐⭐⭐⭐☆
Fractal FM3	8 Scenes	Excellent	Excellent	.syx SysEx files	⭐⭐⭐⭐☆
HeadRush Prime	Scenes	Excellent	Good	File-based preset management	⭐⭐⭐⭐☆
HeadRush Flex Prime	Scenes	Excellent	Good	File-based preset management	⭐⭐⭐⭐☆

Why These Are Attractive

Helix Family

Pros

• Snapshot architecture already matches MatchPatch perfectly.
• Presets are editable JSON files (.hlx).
• Existing MatchPatch implementation already works.
• Full USB audio and MIDI automation.
• Large community.

Helix Stadium

Pros

• Snapshot workflow remains intact.
• .hsp preset format appears JSON-based.
• .hss setlists appear compressed JSON.
• Official import/export workflow exists.
• Direct migration path from the Helix ecosystem.

Why it matters

Helix Stadium may become the single best MatchPatch target after Helix Classic.

Fractal FM3 / FM9 / Axe-Fx III

Pros

• 8 Scenes per preset.
• Excellent USB audio support.
• Extensive MIDI and USB automation.
• Large professional user base.

Cons

• Presets use SysEx (.syx) instead of JSON.
• Requires dedicated parser implementation.

Why it matters

Probably the strongest non-Line-6 candidate.

HeadRush Prime / Flex Prime

Pros

• USB audio interface.
• Scene-style workflow.
• Presets are transferred as files rather than hidden cloud objects.
• Modern architecture.

Open Questions

• Exact preset format.
• Degree of external editability.
• Scene storage structure.

Why it matters

Would benefit greatly from community contributors who own the hardware.

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Potentially Interesting Targets

Device Family	Snapshots / Scenes	USB Audio I/O	Remote Control	File Accessibility	MatchPatch Potential
Neural DSP Quad Cortex	Scenes	Excellent	Good	Unknown / Limited	⭐⭐⭐☆☆
HeadRush Pedalboard	Basic Scenes	Excellent	Good	Moderate	⭐⭐⭐☆☆
Line 6 POD Go	No true snapshots	Excellent	Good	Similar to Helix	⭐⭐☆☆☆

Quad Cortex

Pros

• Excellent audio platform.
• Scene system.
• USB audio.

Cons

• More closed ecosystem.
• Less known about external preset manipulation.
• Harder reverse-engineering path.

Why it matters

Could become attractive if contributors uncover editable preset structures.

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Less Attractive Targets

Device Family	Main Limitation
Boss GX-100	Preset format not easily editable
Boss GT-1000	More editor-centric workflow
Mooer GE Series	Smaller ecosystem, unclear file formats
Hotone Ampero Series	Limited documentation and tooling
Valeton GP Series	Small ecosystem, little reverse-engineering activity

Why These Are Less Suited

Most of these devices provide:

• USB audio
• MIDI switching
• Preset export/import

However, they often lack one or more of:

• Snapshot/scene-centric workflows
• Accessible preset formats
• Active developer communities
• Well-documented automation paths

As a result, development effort is significantly higher while user impact is lower.

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Suggested MatchPatch Support Priority

1. Line 6 Helix Floor / LT / Rack
2. Line 6 Helix Stadium / Stadium XL
3. Fractal FM9
4. Fractal FM3
5. Fractal Axe-Fx III
6. HeadRush Prime / Flex Prime
7. Neural DSP Quad Cortex

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Looking for Contributors

MatchPatch is especially interested in contributors who own:

• Helix Stadium / Stadium XL
• Fractal FM3
• Fractal FM9
• Fractal Axe-Fx III
• HeadRush Prime
• HeadRush Flex Prime
• Neural DSP Quad Cortex

Particularly valuable would be help investigating:

• Preset file formats
• Setlist formats
• Scene/snapshot storage
• Gain parameter locations
• MIDI/USB automation workflows
• Preset import/export behavior

The loudness-analysis engine itself is device-independent. The primary challenge is implementing device-specific preset parsing and gain-writing backends.