Input Sensitivity: 0.775V or 1.4V. Input Impedance: 20k Ohms, 10k Ohms. AC Line Voltage and Frequency Configurations: (+10%) 120V60 Hz; 220V50/60 Hz; 230-240V50/60 Hz.
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. Product Dimensions: 19" x 3.5" 12.4 inches.