Tascam MX-8A, 8-Channel Matrix Mixer and USB Audio Interface with DSP Processor, 16/24 Bit / 44.1/48 kHz, Controllable via Ethernet, RS-485 and RS-232C, Controllable functions for input section: Phantom power on/off, polarity, sensitivity, input level, automatic level adjustment, 4-band EQ, mute, fader,