Here is my 4th generation stereo audio limiter. Team this up with my sibilance limiter module/option below and you have an unbeatable sound on the air. This will handle ANY program material, yet remain transparent to the listener. Limiter schematic

The photo isolator "gain control" cells are manufactured by the company listed below:

Clairex Technologies, Inc
1845 Summit Ave.
Ste. 403
Plano, TX 75074

Phone: 972.422.4676
Fax: 972.423.8628

Special note: The CL-590 is no longer manufactured. However, there is an improved device, the CLM-610, which I have personally inspected samples of. When building this circuit, order the CLM-610. Do NOT request the CL-590 -- it is no longer manufactured.