For sale is my Audio Research DS 450 Stereo Amplifier Solid State. It works perfect and look great. Selling to down size. Accept Paypal (add 3%), Cashier check, and Cash for local pickup). It is very powerful amp and deliver power to my B&W 800 Diamond speakers with great sound and effortless. Sound great. It comes complete with original shipping cartons, owner manual, 20A ac power cord.
Let me know if any question. Thanks for looking.
Specifications (From Audio Research):
Power output 450 watts into 8 ohms (550 watts per channel into 4 ohms), both channels driven, 1% THD. (700 watts into 4 ohms, one channel driven)
Power bandwidth (-3dB Points) 5Hz to 45 kHz into 8 ohms.
Input sensitivity 2.9V RMS for rated output. (26dB Gain) single-ended or balanced.
Input impedance 150K ohms single-ended, 300k ohms balanced differential.
Output regulation 0.02dB 8 ohm load to open circuit.
Overall negative feedback
Damping factor 440
Hum & noise 300 microvolts RMS (105dB below rated output IHF A-weighted.)
Power supply energy storage 1239 joules
Power requirements 100-125VAC 60Hz (200-250VAC 50 Hz) 950 watts at rated output (400WPC 8 ohms) 1300 watts at 500WPC 4 ohms, 1300 watts maximum. 55 watts idle.
Other Output polarity: Non-inverting. Balanced pin 2+ (IEC-268).
Dimensions 19" (48 cm) W x 7" (17.8 cm) H x 18.4" (46.7 cm) D. Handles extend 1.5" (3.8 cm) forward. Output connectors extend 1.5"(3.8 cm) behind rear panel.
Weight 55.8 lbs. (25.4 kg) Net; 71 lbs. (32.3 kg) Shipping.