Golden Age Project Pre 73 Deluxe Vintage Style Mic Pre With High Pass Filter "Vintage Style electronics, with no integrated circuits in the signal pathMaximum input gain 80 dB, enough to handle passive ribbon mics with quiet sound sourcesGain range on the Line input: -20 to + 10 dBSwitchable impedance on mic input, 1200 or 300 Ohms, will change the tone of most micsSwitchable phantom power and absolute phaseA high-impedance instrument input for any sound module, electric guitar or bassA simple but effective 4-step LED output level meterThe output level controls for fine "Maximum input gain 8 dB, enough to handle passive ribbon mics with quiet sound sources" Gain range on the Line input: -2 to + 1 dB "Switchable impedance on mic input, 12 or 3 Ohms, will change the tone of most mics" Switchable phantom power and absolute phase