The Adcom GFA-555 represents the most advanced thinking in audio amplifier design. At 200 watts per channel, it offers exceptional value and superior performance at a reasonable price. Specifications. 555; II; SE; Power output: 200 watts per channel into 8Ω (stereo), 600 watts into 8Ω (mono). I have a never used GFA-555 in the box, only.. The GFA-555 remained in the Adcom line until recently, when the company upgraded it to the GFA-555II,. The Adcom GFA-555II measures 17 inches wide, 11-1/2 inches deep, and 7-3/8 inches high. Rack-mount adaptors are optional. The amplifier is normally finished in black, but a white front panel and white rack adaptors are available on special.
The Adcom GFA-555, which weighs about 30 pounds, is 17 inches wide, 11 inches deep, and 7 inches high. Optional rack-mounting extensions and handles add 2 inches to the width and 1-1/4 inches to the depth. The amplifier is available in a black or glossy white finish. Price: $679.95 in black, $749.95 in white. The RM-7 rack adaptors are $19.95.. The ADCOM GFA-555 II is among the world's greatest audio power amplifiers of all time. The GFA-555 was designed by the legendary Nelson Pass (interview, chat room), whose amplifiers today sell new for five figure price tags.The GFA-555 II was designed from the ground up, except for the heat sinks and chassis, by Walt Morrey.Considering that you can get a used GFA-555 II like this one for about.