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When talking of ADCOM stereo equipment, you are transported to the 70's. Here the ADCOM reigned supreme like status. For its price. That is not saying more expensive is better. This is far from the truth. The ADCOM GFP 565 Pre-Amp made sure of this. The GFP 565 2, relays no difference. Known for their superb sound, the music reproduction from these units are very very good. Although it does lack the more serious level of spaciality. The sound is true. More the signal is true. However they do, did it, ADCOM got it right with the GFP units. These pre-amps makes sure your speakers put out one of the most exact replicas of music sent to it. Crisp highs, very decent vocals, and bass notes. Maybe the bass notes are not quite as hearty as could be, but again, we are talking...for the Money! You may be taken aback when hearing one, but you won't "take it back!"Read full review
Verified purchase: Yes | Condition: Pre-owned
Disappointed to find the phono input doesn’t work correctly. A lot of distortion. I know it’s not my phono as it works fine through other sources.. The cd and tape inputs seem to work fine. I need to find a place to get it serviced. The chance you take buying without being able to audition.
Verified purchase: Yes | Condition: Pre-owned
The Adcom GFP is a very powerful amp with power to burn. Dynamically it is excellent, sound stage very good and paired with the right equipment hard to beat. It does however have its issues. It is a very layed back amplifier, using a tube preamp or bright/warm preamp is a must. I paired a set with a c-4000 carver. It sounded ok (more dynamic but less highs)but the Adcom 5500 sounded better. Paired with the music angle preamp seemed to really bring them out. These amps have another huge issue with their electronics. The capacitors for many of these units (and the GFP 585) have poor quality caps. They are well know for leaking and toasting speakers (smoke etc). Even never used ones have leaked while still in there boxes. One tech I talked to said not to turn them on have them checked first (very common problem). If you are going to purchase these amplifiers Make sure they are recapped. The service is about 190 at this time per amp (240+ for gfp 585) and this will save you a lot of money in speakers. Over all these are a good reliable amplifier if they have been serviced. The sound quality is very good and worth the money.Read full review
It'a an Adcom; for those familiar with the product, little need be said. I have another that I have been using for decades. It lives up to its reputation of being a sonically neutral preamplifier, state of the art as is said by many and at a reasonable price. At the time this purchase was made, I also made purchase of three vintage Adcom power amps. These recent purchases are intended for use with an electronic crossover to experiment with speaker and crossover designs without having to tap into the main systems of which there are four. I design speaker systems. Perks are the hi & lo mag phono inputs which have been excluded from most recent preamps and receivers. That also includes two tape input & output loops and a switchable signal processor loop, such as an equaliser. The only problem experienced was whan a static discharge, created by me when inserting a jack, blew out one of the input buffers. Adcom labels them as AD-n, where n is a digit. Knowing it was an op-amp, the trick was to find an equivalent replacement. Thanks to an article I found in an audio BBS, short order was made of that search and several were purchased. Prior to acquisition of the first preamp & power amp by Adcom, a friend loaned me his preamp and it was compared to a vintage (1970's) top-of-the-line solid state preamp, fully restored by me with better caps, the phono stage caps especially were replaced with silver mica caps. The improvement was impressive until that vintage amp was compared to the Adcom. I still have that old preamp for nostalgic reasons; I'm somewhat of a collector better referred to by my friends as a pack rat extraordinaire. Would I get more Adcoms? Definitely, if and when I need more. I'm not one to fall into the hype trap associated with rediculously priced audio equipment which also includes cables and interconnects.Read full review
Very transparent. As you increase the volume, the tone circuit effect is reduced. Manually decreasing bass and treble is usually what you do when changing volume from low to high. Nice feature!
Verified purchase: Yes | Condition: Pre-owned
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