Audio Research Dual 75 / D75 // Vintage Stereo Tube Amplifier

 

The ARC Dual 75 is an absolute tank. It has classic Audio Research styling, a beautiful warm, detailed sound, and enough power to open the door well beyond high efficiency horn speakers. With a whopping 75 watts per channel of push-pull tube power, this amazing and rare beast delivers a beautifully fluid midrange with warmth that only a high-end tube amplifier can. All of the tube cages are intact. There are definitely a few character marks, patina perhaps, but we've gone through unit from top to bottom, and we put our name on its performance. You will not be disappointed.

PRODUCTION

1971-72

CONDITION

8/10

SERIAL NO.

271111-7

ORIG. MSRP

$975

RESTORATION

• Replaced 6550 output tubes in left channel
• Burnished internal switches for bias jacks
• Cleaned control contacts
• Adjusted bias
• Verified power and distortion Both channels 75 watts per channel RMS into 8 ohms @ less than 1% THD
• Replaced all electrolytic capacitors

SPECS

Power output 75 watts per channel into 8Ω (stereo)

Frequency response 15Hz to 30kHz

Total harmonic distortion 1%

Damping factor 14

Input sensitivity 1.5V

Signal to noise ratio 80dB

Speaker load impedance 4Ω to 16Ω

Valve complement 4 x 12AX7, 8 x 6FQ7, 2 x 6550, 1 x 5881

Dimensions 19 x 7 x 12.25 inches

Weight 52lbs

THE HISTORY OF AUDIO RESEARCH

Audio Research Corporation, affectionately known to fans as ARC, was founded by William Z. Johnson, who began designing custom audio electronics in the early 1950’s and who also operated a specialty audio retail store until the mid-1960’s. Johnson’s efforts almost single-handedly revived vacuum-tube designs at a time...
[ Read More ]

LINER NOTES

The DUAL 75 Amplifier is a basic power amplifier of near-military construction aimed at advancing the art of music reproduction. Its dynamic characteristics are without equal when used with commensurate associated equipment.

STOCK NO.

7718841319645