Adcom GFA-555 - STEREO POWER AMPLIFIER - rack mountable, great condition

For Sale: A legendary power amp in very very nice condition. Made in the USA around 1985.

Works perfectly and the sound quality is pure sonic bliss. Will drive your most demanding speakers without any issues. Cosmetically very nice with only a tiny bit of wear on the finish if you look closely. Nice and clean. Adult owned and never abused. Tested in both stereo mode and bridge mode at all volume levels. No hum, no distortion, no issues. Has the rack mount front and handles which are removable.

There are tons of reviews and info available online, just do a Google search. They also made a GFA-555 II and a GFA-555 SE which are more common but this is the original and arguably the best of the series.

Note: this is a power amplifier and NOT an integrated amplifier. It requires a pre-amplifier for use.

Specs found online:

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Power output: 200 watts per channel into 8Ω (stereo), 600 watts into 8Ω (mono)
Frequency response: 10Hz to 20kHz
Total harmonic distortion: 0.09%
Damping factor: 800
Gain: 27 dB
Input sensitivity: 1.75V
Signal to noise ratio: 110dB
Semiconductors: 42 x transistors, 2 x zener diodes, 13 x diodes, 2 x IC, 2 x diode bridges
Dimensions: 185 x 432 x 310mm
Weight: 35lbs

Email me for higher resolution and/or additional photos.

Email for shipping quote- should be between $14.99 and $29.99 if you in the continental USA. (Sept. 2025).