Presonus RC 500, Solid-State Channel Strip, Class-A hybrid input stage with discrete transistors, 48V Phantom Power switchable, 80 Hz High Pass Filter, 20 dB pad and Phase switchable, FET based compressor, -band semi-parametric equalizer with Shelf/Peak-Switch, Hard-Bypass Switch for Compressor and EQ, VU-Meter, balanced Insert Send/Return (TRS), balanced Output XLR- and TRS, Housing: 19" 1U