GFM Koch
Key Features
- Uses physical synthesis to produce punchy pitched-percussion tones rather than a sampled instrument library.
- Targets a clear, crystalline sound from low sub-bass notes through brighter resonant attacks.
- Suited to sub-bass stabs, percussive basses, electric-piano-like colors, and tonal percussion.
- Includes a sub-oscillator for adding low-frequency weight beneath the main resonant voice.
- Provides per-voice distortion for taking clean struck sounds toward a rougher edge.
- Available from Auburn Sounds as v1.0 in VST and Audio Unit formats for Windows and macOS.
Description
GFM Koch is Auburn Sounds' legacy physical-modeling synth for sharp, pitched percussion and compact low-end parts. Its sound is built for clean attacks and a crystalline response, making it particularly useful for sub-bass stabs, percussive basses, electric-piano-like voices, and tonal percussion.
The instrument pairs its resonant core with a sub-oscillator and per-voice distortion, so it can move from pure struck tones toward a rougher, more forceful sound without requiring a layered synth setup. That focused architecture makes Koch better suited to direct rhythmic notes and defined bass punctuation than to broad, evolving pad work.
Start with short MIDI patterns and use the sub-oscillator to give a pitched hit more weight below the main resonance. Add the voice-wise distortion sparingly when a part needs more attitude, then leave space around the note length so its percussive contour stays clear in the arrangement.
Koch is a legacy release: Auburn Sounds still provides an exact product page with a public full-version download, but labels the plug-in unsupported and says it will not receive support or updates. The developer page identifies v1.0 as a Windows and macOS VST and Audio Unit release.
Frequently Asked Questions
What type of synth is GFM Koch?
GFM Koch is a physical-modeling synth designed around pitched percussive sounds. Auburn Sounds positions it for punchy resonant notes rather than a large general-purpose synth architecture.
What sounds can Koch create?
The developer specifically calls out sub-bass stabs, percussive basses, electric-piano emulations, and tonal percussion. Its character is clean and crystalline, so short rhythmic phrases and defined attacks are natural starting points.
Does GFM Koch include distortion?
Yes. Koch includes a sub-oscillator and voice-wise distortion, which lets you reinforce low frequencies or add edge to individual notes while retaining the instrument's percussive focus.
Is GFM Koch actively supported?
No. Auburn Sounds labels Koch as unsupported and says it will not receive support or updates. The official product page nevertheless continues to provide the full-version download.
