This PCB from DIY-Tubes.com is based on one of THATcorp’s highly thorough and informative datasheets which accompany their 4301 VCA-based dynamics control IC. The resulting compressor/limiter is a high-functioning, transparent-sounding unit.
- Threshold, ratio, and gain potentiometers
- Hard/soft knee and Peak/RMS switches
- Requires +/-15V power supply (not included)
$5 for PCB, $13 for 4301 chip
- available from DIY-Tubes.com