- Classic API circuit design - API 2520 OP amplifier - Switchable 3:1 Output transformer for each channel - Switchable 48 V Phantom Power, -20 dB pad and polarity for each channel - LED Meter as well as adjustable gain and output volume for each channel - 4 XLR Inputs - 4 Hi-Z Inputs: 6.3 mm Jack - 4 XLR Outputs - Design: 19" / 1 U EUR 3899.00 - See more - Buy online