The poor man’s 660 is a vari-mu tube compressor based on the famous fairchild 660. Schematics by Analag, PCB design from [silent|arts].

Images:

Features:

• Vari-mu compressor
• Input gain + Threshold
• 5 different time constants
• dual mono or linked mode

Purchasing

You can’t purchase boards anymore but they sometime pop up on GroupDIY’s blackmarket.

External Links

• GroupDIY build thread