The NuForce Reference Series stereo amplifiers are designed for both high-performance stereo and home-theater use. They can be used for bi-amping, tri-amping and home-theater mixing-and-matching when used with NuForce AVP (Audio-Video Processor) products. The Reference Series stereo amplifiers are standardized on a platform consisting of amplifier, power-supply and capacitor modules, any of which can be upgraded when new technology becomes available. Advancements in technology will never render NuForce stereo amps obsolete. NuForce stereo amplifiers come with a three-year warranty.Utilizing the same V3 circuit board as the NuForce celebrated mono amps, the Stereo 8.5 V3 is the most powerful and compact stereo amplifier on the market. Among the 8.5 V3s features is a half-size Ref 9V3SE capacitor board for near-SE level performance. Available in black or silver finish.SPECIFICATIONSConfigurationMono Input: RCAFrequency Response20 Hz -0.3dB to 120 kHz -3dBPower/Load8 ohm, 4 ohm, 2 ohmPeak Output Power8 ohm (288W) 4 ohm (576W) 2ohm (1125W) (20 ms hold time)RMS Power8 ohm (150W) 4 ohm (200W) 2 ohm (200W)Input Impedance22k ohmInput Sensitivity2.57V, 100W @ 8 Ohm1.81V, 100W @ 4 OhmTHD+N0.01%, 1kHz, 1W to 10W, A WeightedGain21 dbDimensions8.5 in W x 16 in D x 1.97 in H (2.37 in H include feet)Weight9lbsWorldwide AC voltage84VAC to 264VAC.( No need for AC regulator if the AC voltage falls within the specified range.)