Q2 Audio

The ADR Compex began life as a diode bridge limiter followed by a FET based design that was modified over the years to what we know today as the F760X-RS. ADR had different units that were combined to make the F760X-RS: F700 was the compressor, F600 was their broadcast limiter, the "X" indicated it had the Expander/Gate and "RS" indicated "Rackmount Stereo". So, adding these parts up gave them the F760X-RS. ADR supplied their "Compex" PCB's to other manufacturers such as Helios and Calrec to build into their custom consoles.