Output Power: DS-5 500W/8Ω 700W/4Ω DS-3 350W/8Ω 500W/4Ω Total harmonic distortion: <0.01% Signal-to-noise ratio: >105dB Input impedance: balanced 20KΩ / unbalanced 10KΩ Input sensitivity: 0db/1V Voltage gain: adjustable, maximum 32dB (40 times) Frequency response (full frequency): 15Hz~25KHz ±0.15dB Frequency response (SUB): 50Hz~500Hz ±0.15dB Conversion rate: 50V/us Channel isolation: 105dB (1KHz); 80dB (20KHz) Damping coefficient: 8Ω/1KHz﹥250 Connector: input: XLR female, lotus seat input indicator: signal indicator, power indicator, overload indicator. AC input voltage: AC110V or 230V/50~60Hz