Total tube performance. The 12AY7EH and 12AU7EH vacuum tubes control every aspect of the 12AY7 Tube Mic Pre. Wide dynamics, warm tone with true accuracy. 50 db of gain/hi impedance and 40db gain/low impedance. 1/4" TRS balanced buffer out can be a splitter or aux send for monitoring. XLR I/O, phase reverse, 4 LED level optimizer and 48-volt phantom power. Full 200 volts to the plate power supply dwarfs the competition. Microphone to line level through an FET current balance circuit. Soft start and pop free.