SM Pro Audio PR8E 8 Channel Microphone PreAmp Mic New 8 x discrete microphone preamplifiers, Line Input: Impedance 47K Ultra-Wide Dynamic Range, Line Input: Min sensitivity -35dB, Low-Noise Operating Levels Line Input: Peak input level +32 dB, Balanced XLR/combo Inputs and TRS Outputs Output: Impedance 600 Ohms, 48V Phantom Power per channel Peak output level:+23dB, Phase Reverse per channel, Frequency response: 20Hz- 20KHz 0dB- -0.5dB