Q2 Audio is a Royal Oak, Michigan-based pro audio manufacturer focused on preserving and reissuing classic British studio compression designs. The company is best known for licensing and reproducing the ADR (Audio & Design Recording) Compex, a compressor/limiter whose lineage traces back to late-1960s England, where ADR's circuit boards were also used by console builders like Helios and Calrec. Q2 reintroduced the design in 2005 as the F760X-RS, retaining the original circuitry while updating voltage regulation and power decoupling for modern studio environments.

The product line centers on the F760X-RS Compex stereo compressor/limiter and its variants, including the F765 500-series compressor/limiter, the F769 Vocal Stresser, and a software Compex plug-in. The hardware is manufactured in the USA under official license from AD(R), with an emphasis on faithful recreation of the FET-based gain cell and the program-dependent attack, release, ratio, and expander/gate behaviors that gave the original its character on drums, vocals, and bus processing.

Q2 Audio has 2 products cataloged on Equipboard, including Effects Processors.