Chandler Limited TG2 Dual Mono Mic Preamp, Dual Mono Microphone Preamp / DI, Gain: +5 dB to +75 dB, Input impedance: 1200 to 300 Ohm, Phase reverse switchable per channel, +48 V phantom power switchable per channel, Includes connection cable for optional PSU-1 power supply unit (Art.#194566# - not included)