Audio Research D-70 MKII Tube Amplifier Serviced w/ New Power Supply

Audio Research D-70 Mk II Vacuum Tube Power Amplifier in very clean cosmetic condition. The faceplate is in excellent shape with no dings or scratches. The amp chassis and transformers are also in very good shape as pictured. It includes the original Audio Research double box shipping cartons and a copy of the owner's manual.

The amplifier works well and sounds excellent. It was serviced by an authorized Audio Research technician a few months ago, including replacement of the main power supply capitors. All tubes are working well with plenty of life remaining on the present tubes.

The tube compliment of the D-70 MKII: (3) 6922, (4) 6FQ7, (2 matched pairs) 6550, (1) 6550, (1) 12AX7. The power output is rated at 70 watts per channel of pure Audio Research classic vacuum tube goodness. The Serial Number is # 45329005.

The Audio Research D-70 Mk II amplifier is a highly musical amplifier from Audio Research's golden age in the late 1980's when it was leading the audio vacuum tube renaissance. The engineers proceeded with the design philosophy of utilizing a simple, but proven classic vacuum tube circuit, with none of the Jfet or solid state stages that were used in some of their later designs that get mixed reviews. While the design of the D-70 MkII is straightforward, it nevertheless incorporated state of the art electro-mechanical implementation with premium military grade components . The emphasis on simplicity resulted is a very musical sounding amplifier built with the world class quality that Audio Research is renowned for.