API Audio 3124V, 4-Channel Microphone, Instrument and Line Preamplifier, Classic API circuit design, API 2520 OP amplifier, Switchable 3: 1 Output transformer for each channel,...
API Audio 512c Mic Pre, Mic Preamp, The 500 series, 65 dB gain, Microphone input on the front and back, Line / instrument input jack, 20 dB pad-switch, 48V phantom and phase...