Audio Research DS450 Power amplifier


Technical specifications

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 POLARITY Non-inverting. Balanced pin 2+ (IEC-268).

OUTPUT REGULATION 0.02dB 8 ohm load to open circuit (Damping factor 440).

HUM & NOISE 300 microvolts RMS (105dB below rated output IHF A-weighted.)

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.

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. Specifications subject to change without notice.