The Adcom GFA-555 represents the most advanced thinking in audio amplifier design. It offers exceptional value and superior performance at a reasonable price. Being innovative is what keeps us going strong and achieving great things. Whether it's our iconic high current amplifiers or our cutting-edge digital processors, ADCOM components never.. I am reluctant to call any given transistor power amplifier a "best buy" or "breakthrough." From my talks with designers and other audiophiles, it is clear that the state of the art in power amplifiers is about to change. From where I stand, the Adcom GFA-555 is the first sample of this new wave. It is so clearly superior to past amplifiers in the low- to mid-priced range—not to mention most.
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 happens to be one of the smoothest and most detailed amps I've heard and that I own 2. They compliment but, yet sound identical to my 2 Denon POA-2400A's. The GFA-555 has a little difference in sound than the newer Adcom amps like the updated model the GFA-5500. The GFA-5500 seems to be a little brighter like, the highs and.