This is a replica of a popular optical compressor.
- DOD 280A Compressor replica PDF Project File
- DOD 280a Compressor Schematic
- Modified DOD 280 Compressor Schematic
The DOD 280 (no “A”) compressors were somewhat different. We don’t know if this design is any better or worse than the 280A. For informational purposes, here’s a schematic from one we traced out: