Input Impedance: 1MΩ Minimum Load Impedance: 4Ω (2Ω in 2Ω mode) Maximum Power Output: 900 Watts RMS @ 4Ω (1khz full blast 2 min max) 20%THD (450 Watts RMS @ 8Ω ) Return Input Impedance: 1MΩ Return Input Level: 1500 mV RMS 1200MV RMS at 2 ohm mode Send Output Impedance: 1kΩ Send Output Level: 1200 mV Maximum Power Consumption: approx. 700VA Forced-air cooled AC Input Power: 100-250 VAC Cycles: 50/60 Hz Dimensions: 26.7cm l x 7cm h 25.5cm w (10.5” l x 2.75” h x 10” w) Weight: 2.9Kg (6.39Lbs) Built and Engineered in Helsinki, Finland.