Audio Upgrade Modification by Rick Krzemien of BIG SKY AUDIO to HALO JC5 quality level components, in direct consultation with John Curl for component choices for Best Audio Fidelity and Enjoyment.Ugrades included: REL Capacitors HOLCO 47K Resistor swap for R-44 Resistors RUBYCON BLACK GATE Capacitors NICHICON KZ Capacitors NEW TECH Soft Recovery High Current Bridge Rectifiers in Main Power Supply Replacement of Resistors on the Feedback Circuit. From the Parasound Website: FEATURES Independent power supplies for each channel for true dual-monaural operation Massive encapsulated 1.4 kVA toroid power transformer for each channel 97,600 uF power supply capacitance for each channel Multiple polystyrene film bypass capacitors in power supply Direct coupled design uses no inductors or capacitors in the signal path DC servo direct-coupled audio circuits with 0.5 Hz rolloff Output transistors direct-coupled to speakers without LRC networks Cascode Class A input stages with matched J-FET pairs Hand-picked complementary MOSFET transistors in high voltage driver stage High-bias Class A/AB operation provides 15 Watts of pure Class A operation 8 complementary pairs of 15 ampere 60 MHz output transistors per channel High-quality Neutrik XLR jacks for balanced inputs Two sets of gold-plated metal structure RCA input jacks for balanced operation Two sets of gold-plated 5-way binding posts facilitates bi-wiring Multiple protection circuits, temperature sensors and silver-cadmium relay protection Glass epoxy circuit boards, double-sided for precision Two hand-made audiophile-grade AC power cords-separate for each channel SPECIFICATIONS Continuous Power Output - Stereo: 350 watts RMS x 2, 20 Hz - 20 kHz, 8 ?, both channels driven; 500 watts RMS x 2, 20 Hz - 20 kHz, 4 ?, both channels driven Current Capacity: 120 amperes peak per channel Slew Rate: > 200 V/?second Power Bandwith: 2 Hz - 150 kHz, +0/-3 dB at 1 watt Total Harmonic Distortion: <0.025% at full power; < 0.01% at typical levels IM Distortion: <0.03% TIM: unmeasureable Dynamic Headroom: > 1.5 dB lnterchannel Crosstalk: > 95 dB at 1 kHz, > 80 dB at 20 kHz Input Sensitivity: 1 V for 28.28 V; 2 V for full output Input Impedance: 100 k ? S/N Ratio: > 120 dB, full power Damping Factor: > 1000 at 20 Hz Power Consumption: 1200 watts Dimensions: w 19 x h 7 x d 22, h 7 5/8 with feet Net Weight: 85 lb.