Input Impedance: 1 MOhm (pad at 0dB), 47 kOhm (pad at -20dB or -40dB) Max Input: +9dBu (pad at 0dB), +29dBu (pad at -20dB), +49dBu (pad at -40dB) Input Connectors: Two Parallel 1/4" jack connectors (Tip Hot +ve, Sleeve ground), and a parallel XLR connector (unbalanced) (Pin 2 Hot +ve, Pin 1 & 3 ground) Output: Transformer Balanced Max Output: +8dBu into 600 Ohms or greater Output Connectors: XLR3-32 or equivalent THD: < 0.005% at 1khz, 0dbu output Noise: < -105db unweighted, 22hz-22khz, rms* Frequency Response: 30Hz to 20kHz, +0dB/-1dB Main/Standby battery: 9 volt PP3 type, preferably alkaline Power Consumption: on phantom: less than 7.5mA, on battery: less than 2mA. Phantom Power: +20 volts DC to +48 volts DC Unit Weight: 650 gms, excluding batteries Dimensions: 59 mm x 124 mm x 143 mm (2.3" x 4.9" x 5.6")