Reliable design incorporates many popular featuresHoused in a rugged, all-steel 3U chassisEfficient forced-air fans prevent excessive thermal buildupElectronically balanced XLR inputs; touchproof binding post and Speakon outputsPrecision detented level controls, power switch, power LED, and six LEDs which indicate signal, clip and fault for each channel.Sensitivity (volts RMS) for full rated power at 4 ohms: 1.25 V.Frequency Response (at 1 watt) 22 Hz to 20 kHz: +0 dB, 0.8dBSignal-to-Noise Ratio (20 Hz to 20 kHz)_A-weighted, below rated power: _>98 dBNo weighting, below rated power: >93 dB.Total Harmonic Distortion (THD): <0.5 percentIntermodulation Distortion (IMD):_(60 Hz and 7 kHz at 4:1) from full rated output to 40 dB: < 0.3 percentDamping Factor (8 ohm) 10 Hz to 400 Hz: >200.Crosstalk (below rated power)_at 1 kHz: 76 dB. at 20 kHz: 58 dB.Input Impedance (nominal): 20 kilohms balanced, 10 kilohms unbalanced.Load Impedance: Rated for 2 to 8 ohms per channel in Stereo, 4 to 8 ohms in Bridge Mono.AC Line Voltage and Frequency Configurations Available (±10 percent): 120 VAC 60 Hz, 100 VAC 50/60 Hz, 220 VAC 50 Hz, and 230-240 VACDimensions (W x H x D): 19" x 5.25" 15.5"Weight: 62 lb