audio research
D-76

Description
Tube stereo power amplifier.

Introduced
1974

Discontinued
1977

Revisions
D-76A (1975)

Options
Gold/champagne faceplate

MSRP (US new retail)
$995
$1,195 (D-76A)

Specifications

D-76A:

Power output 75 Watts per channel minimum RMS (both channels operating) into a 4, 8 or 16 ohm load from 20 Hz to 15 kHz with less than 1% total harmonic distortion
Power bandwidth  
Frequency response  
Input sensitivity 1.5 volts for rated output
Input impedance 80K ohms at 20 Hz; 30K ohms at 15 kHz
Output taps 4, 8, 16 ohms
Output regulation  
Overall negative feedback  
Damping factor 14 at 8 ohms (1 kHz)
Distortion Intermodulation distortion: less than .5% at rated power
Slew rate  
Rise time  
Hum & noise More than 80 dB below rated output
Power supply energy storage  
Power requirements 100, 120, 200, 220, 240 VAC; 50-60 Hz, 550 watts at rated power output
Tube complement (4)12AX7, (8) 6FQ7, (2 matched pairs) 6550, (1) 6550
Other  
Dimensions 19" W x 7" H x 12 ¼" D.
Weight 52 lbs. Net, 63 lbs. Shipping

Reviews

Number 4 (D-76: Full Review), Number 7 (D-76A: Consideration), Number 8 (D-76A: Full Review)
Vol. 3 No 7

Pictures

D-76:

D-76A: