HERITAGE AUDIO HA609A is a 2-channel mono/stereo rack compressor/limiter. Technical features include diode bridge compressor equipped with 3 Carnhill/St Ives transformers for each channel, quick connection function on both the compressor and limiter, maximum input level +22dBu, maximum output level +26.5dBu on 600 Ohms, frequency response + - 0.5dB, 15Hz- 30kHz
.Commands on each channel: Limit level, Release (limiter), Threshold, Ratio, Release, Gain make up (compressor)