Warm Audio WA273-EQ, 2-Channel Microphone Preamp in British 1073 Style with Equaliser, Discrete Class A circuit, Carnhill transformer, 80 dB gain, Incremented potentiometer, Tone button for switching the input impedance, Switch for phase reversal, Low-cut filter 4-step switchable: 50, 80, 160, 300 Hz, 3-Band induction coil EQ low-band Boost/Cut: 35, 60, 110, 220 Hz, Mid-band Boost/Cut: 360, 700, 1600, 3200, 4800, 7200 Hz, Treble-band Boost/Cut: 10, 12, 16 kHz, Additional treble band EQ points, LED meter, 48V Phantom power, Integrated 115 / 230V power supply, Build: 19"" / 2 U@+*Connections:*@+@+, 2 Microphone inputs: XLR, 2 Line inputs: 6.3 mm jack, 2 Instrument inputs: 6.3 mm jack, 2 Insert inputs and outputs: 6.3 mm jack, 2 Line outputs: XLR and 6.3 mm jack