Great River ME-1 NV, 1-Channel Solid State Mic Preamp, XLR Microphone input, Hi-Z Instrument input on the front side, Balanced XLR outputs, TRS Insert to the output amplifier, Adjustable gain in 5 dB steps up to 60 dB, 1/4"" - 10 dBV output for latency monitoring, Phantom power, Design: 19"" / 1 U