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Perfect Condition Adcom GFA-555 Power Amplifier MK II Version - $850 (berkeley)
condition:
new
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It is in perfect condition. Serviced in 2021.
Design by Nelson Pass
The Adcom GFA-555 , is a highly valued power amp with a design and build that improves upon one of the most popular power amps ever made. Mechanically and electrically, this Adcom GFA-555 power amp is in Excellent condition. The terminals are in great condition and show no signs of wear. Cosmetically, it is in Very Good condition. All the lettering is perfectly intact. The GFA-555 sounds huge even for a 200 wpc amp. The larger power supply and triple Darlington output stage precisely handles even the most demanding loads. This high current amp can deliver more than 75 amps into low impedance without straining or clipping. This model designed by Nelson Pass
Product Description:
FEATURES
- Larger potted transformer provides better overall regulation for driving lower impedances at high power levels; also provides greater peak-current capability into loudspeaker loads.
- No electrolytic capacitors in the low-frequency signal path or feedback-loop path. Only precision non-polarized capacitors are used.
- Addition of a servo circuit minimizes DC-offset voltage at the loudspeaker outputs; this insures that there is no woofer "biasing" with attendant low-frequency distortion.
- Larger heatsinks for each channel for greater heat dissipation and better temperature and dynamic bias tracking. Greater thermal stability is thereby insured.
- More cooling vents on top cover and chassis for greater cooling efficiency and cooler operation into lower impedances.
- High-quality, gold plated brass RCA input jacks with Teflon insulators.
- Thermal overload indicator LED on front panel.
SPECS
- Power Ratings:
200 watts continuous average power into 8 ohms
325 watts continuous average power into 4 ohms
600 watts continuous average power into 8 ohms (bridged)
- Freq. response: 10 - 20,000Hz
- Gain: 27dB
- S/N Ratio: 200 watts into 8 ohms, >110dB
- Input Sensitivity: 200 watts into 8 ohms 1.75V rms