ART Pro MPA II, 2-Channel microphone preamplifier, Discrete Class-A, Adjustable input impedance (150 - 2400 Ohm), Adjustable anode voltage, 2x XLR mic inputs, 2x 6.3 mm Jack instrument inputs, Balanced XLR and jack outputs, Switchable phantom power: 48V, High pass filter, Large VU meter, Backlit meters, Supports M/S decoding matrix, Design: 19