Heritage Audio HA-73 EQ Elite, Single-Channel Microphone Preamp with Equaliser, Based on the 1073, Hand-wound Carnhill transformers, Completely discreet, three-stage microphone preamp, Amplification: 80 dB microphone and 50 dB line, -20 dB pad, LO-Z for switching the input impedance from 1200 to 300 Ohm, HP filter at 80 Hz, Completely discreet 3-band vintage EQ with induction coils, Hi-Shelf filter at 12 kHz, Mid-band, switchable between six operating frequencies and OFF, Lo-shelf filter, switchable between four operating frequencies and OFF, Coil-based high-pass filter, switchable between four operating frequencies and OFF, Connections: XLR Microphone input, XLR line input, XLR line output, Instrument input: 6.3 mm jack, Switchable 48V phantom power, External power supply unit included, Build: 19