audio research
D-150

Description
Tube stereo power amplifier. Only approximately 200 made.

Introduced
1975

Discontinued
1977

Revisions
-

Options
-

MSRP (US new retail)
$2,685

Specifications

Power output 150 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 2.2 V for rated output
Input impedance Greater than 30 kOhms below 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, 110, 120, 220, 240 VAC 50-60 Hz, 1000 watts at rated power output.
Tube complement (4) 12AX7, (8) 6FQ7, (5 matched pairs) 6550
Other  
Dimensions 19" W x 16 1/2" D x 10 1/2" H
Weight 115 lbs. Net, 155 lbs. Shipping

Reviews

Number 8 (Full Review)
Vol.3 No.11

Pictures