Stereo/parallel/bridge-mono mode User selectable input sensitivity - 0.775V and 1.4V Efficient forced-air cooling prevents excessive thermal buildup Electronically balanced RCA & XLR inputs; binding post and Speakon outputs Two level controls, power switch, power LED, and six LEDs which indicate signal presence, clip and fault for each channel Protection against shorts, no-load, on/off thumps and radio-frequency interference Frequency Response 20 Hz - 20 kHz, +0/-1 dB (at 1 watt) THD 0.5%, 20 Hz - 20 kHz Intermodulation Distortion =/ 0.35% (60 Hz and 7 kHz at 4:1 from full rated ouput to -30 dB) Slew Rate 10V/us Voltage Gain 33 dB Damping Factor (8 ohms, 10 Hz to 400 Hz) 200 Signal To Noise Ratio (A-weighted) >100 dB Crosstalk (below rated power) 20 Hz to 1 kHz -75 dB, -59 dB Input Sensitivity (for full rated power at 8 ohms) 0.775V or 1.4V Input Impedance (nominal balanced, unbalanced) 20k, 10k AC Line Voltage and Frequency Configurations Available (+10%) 120V60 Hz; 220V50/60 Hz; 230-240V~50/60 Hz Dimensions 19" x 3.5" x 12.4" (48.3cm x 8.9cm x 31.5cm) Weight 29.7lbs (13.5kg) IEC Power Connector 15A