Lake People Mic-Amp F311-D Two Channel Microphone Preamplifier

The F311-D is the two-channel Lake People microphone preamplifier in a 19 inch, 1U frame. Gain is set on a precision stepped switch, 0 to +66 dB in twelve steps of 6 dB, so a level can be written down and dialed back in exactly rather than approximated on a continuous pot. Noise measures -129 dB at 60 dB of gain.

Inputs and outputs are electronically balanced on XLR, with unbalanced outputs on RCA as well, and input impedance is 5 kOhm. Each channel pair has switchable 48 V phantom power, a 12 dB per octave low cut at 70 Hz, phase reverse and a 7-step level meter that can be calibrated internally. Frequency response runs 5 Hz to 70 kHz at -3 dB with THD+N under 0.001 percent.