What is Included: Amplifier, Power cable, Remote Control, and Factory packaging. Functional Notes: Operational condition of this item is excellent, fully tested and no issues found. Age: Manufactured February 2007 Tobacco Exposure: No Service History: None MSRP: $4495 Other Notes: You should expect state of the art performance and sonics from any of the GCC Series Control Amplifiers. These Control Amplifiers are unmatched by any other power amplifier/preamplifier combination on the market in terms of performance within their rated power levels and will provide excellent performance in either a two channel or multi-channel environment. -PS Audio PS Audio GCC-500 Integrated (or as PS Audio likes to call it, a CONTROL) Amplifier. This is truly a hi-end audiophile integrated that has 500 watts per channel into 8 ohms (1000 into 4 ohms) so it can drive virtually ANY speaker. The sound quality is truly astonishing. Here are the specs.... Con?guration Dual MonoClass of Operation DSingle-ended Inputs RCA - 5 pairBalanced Inputs XLR - 1 pairInput Device Type PS Audio Gain CellInput Impedance 47.5 kohmsInput Sensitivity 8.5VPre-Out RCA - 1 PairOutput Binding Posts PS Audio w/ Locking Banana JacksOutput Power @ 8 ohms (GCC-100) 100 WattsOutput Power @ 4 ohms (GCC-100) 200 WattsOutput Power @ 8 ohms (GCC-250) 250 WattsOutput Power @ 4 ohms (GCC-250) 500 WattsOutput Power @ 8 ohms (GCC-500) 500 WattsOutput Power @ 4 ohms (GCC-500) 1000 WattsGain (RCA) 31 to 41dB (Adjustable)Gain (XLR) 37 to 47dB (Adjustable)Frequency Response (GCC-100) 10Hz - 20kHz(+0.1/-0.1dB)Frequency Response (GCC-250) 10Hz - 20kHz(+0.1/-0.2dB)Frequency Response (GCC-500) 10Hz - 20kHz(+0.1/-1.0dB)THD (GCC-100 @ 1W) < 0.02%THD (GCC-100 @ 100W) < 0.03%THD (GCC-250 @ 1W) < 0.02%THD (GCC-250 @ 250W) < 0.08%THD (GCC-500 @ 1W) < 0.02%THD (GCC-500 @ 500W) < 0.05%Power Consumption @ idle