Audio Research D-51 Dual 51 Tube Amplifier

For sale is a Audio Research D-51 tube amplifier in great condition. This was purchased from John at Van L Speakers in Norridge, IL. He went through it, biased it and tested tubes before sale and it has been used sparingly since purchase two years ago. It sounds incredible, burns hot and with the right speaker match produces a near perfect vintage tube sound. I unfortunately have too many speakers and amplifiers on hand and need to thin the heard.

For local pick up only in the North suburbs of Chicago. This unit is just too heavy to ship.

Specifications and Design

• Power Output: 50 watts RMS per channel into 4, 8, or 16 ohms.
• Tube Complement: Four 12AX7, eight 6FQ7, and three 6550 power tubes.
• Frequency Response: 15 Hz to 30 kHz.
• Weight: 50 lbs (22.7 kg). [1, 2, 3]