Stereo Class A opto-compressor with spectral control Stereo Class A six band discrete passive program EQ TSP twin signal path, vacuum tube bypass Low noise -92dB Fully balanced Class A input and DC coupled outputs Stereo dynamic 60dB high resolution output meters High quality analog VU meter for gain reduction High headroom+36dB input before overload Spectral side-chain monitor for pre listen EQ pre-post selection for opto-compressor Sealed silver relays for all signal routing Internal discrete regulated power supplies Military spec vacuum tubes for long life and low noise