GroupDIY forum member “Luny Tune” created a bill of materials, PCB drawing, and assembly notes for a clone of the Urei LA-4 optical compressor.  PCBs are currently available from Gustav’s White Market store.

Notable Features:

• Solid-state version of the LA-2A
• Works with Lundahl, OEP, and Cinemag transformers

Price: 18€ for PCB

More information:

• The GroupDIY build thread.
• PCBs made by PCB Grinder