Minimum Gain : 8.5 dBMaximum Gain (continuously variable) : 60 dB (70 dB in Ribbon Mode)Frequency Response : +0 / -3 dB sub 3 Hz to beyond 300 kHzNoise 60 dB Gain, 10 Hz - 30 kHz, Inputs common : -130 dB EINTotal Harmonic Distortion + Noise : 35 dB Gain, 10 Hz - 20 kHz bandwidth, +27 dBu Out < .001%, Typ. < .0005% (< 5 ppm)Intermodulation Distortion (50 Hz & 7 kHz) 35 dB Gain, +27 dBu Out : < .0009%Phase Response 35 dB Gain, 50 Hz - 20 kHz bandwidth, +27 dBu Out : < 2 degrees deviationCommon Mode Rejection Ratio 35 dB Gain, 10 Hz - 20 kHz bandwidth, 100 mV C.M. : > 65 dB, Typ > 85 dBSlew Rate 35 dB Gain, +27 dBu Out : > 25 Volts per microsecondMaximum Input Level 20 Hz - 40 kHz : +20 dBu (no attenuator pads required)Maximum Output Level 20 Hz - 40 kHz : +28 dBuPhantom Input Impedance 1 kHz : 6,750 ohmsOutput Impedance : 24.3 Ohms (x2)Phantom Powering : +48 V dc, +/- 2 V dcDimensions/Shipping Weight : 1-1/8" W x 2-5/8" H x 5-7/8" D, .25 lbs.