The Nonlinearcircuits ADSR312 module is based on the Aires 312 envelope generator.
Aires was a Massachusetts based synth manufacturer from the 1970s & early 80s.
They produced many of their modules in kit form as well as pre-assembled systems such as the Aries 300.
There are no CMOS chips or op-anps in this circuit, and only 4 components are SMD.
Links:
1. NLC blog
2. NLC build notes
3. Vintage synth Aires 300 modular
4. Muff Wiggler - Aires Modules
5. NLC - more Schematics, BOM, build notes
6. ModularSynthesis.com - Aires AR-312 EG restoration
7. ModularSynthesis.com - General Airies Module restoration
8. Modular Synthesis.com - PDF - AR 312 schematics, pics, etc
9. Switched On video - A Hybrid Digisound & Aries Modular Synthesizer
10. Muffs & more
Aires was a Massachusetts based synth manufacturer from the 1970s & early 80s.
They produced many of their modules in kit form as well as pre-assembled systems such as the Aries 300.
There are no CMOS chips or op-anps in this circuit, and only 4 components are SMD.
Links:
1. NLC blog
2. NLC build notes
3. Vintage synth Aires 300 modular
4. Muff Wiggler - Aires Modules
5. NLC - more Schematics, BOM, build notes
6. ModularSynthesis.com - Aires AR-312 EG restoration
7. ModularSynthesis.com - General Airies Module restoration
8. Modular Synthesis.com - PDF - AR 312 schematics, pics, etc
9. Switched On video - A Hybrid Digisound & Aries Modular Synthesizer
10. Muffs & more