Very Clean Audio Research Dual 75A (D-75A). Biased up to 50ma each output tube and working perfectly...ready to go.
One of Audio Research's best Amplifers ever made. No hum, or noise. Front Lamp changed out to long lasting Blue LED.
Comes with original Amp Cage.
75 Watts per Channel.
All tubes tested and at 85 - 100%
Tube compliment both channels:
Mullard 12AX7 (4)
6FQ7 (8) 2 are Electro Harmonix, 4 are RCA
GE 6550 (4) Output Tubes
GE 6L6GC (1) Regulator Tube