My son bought me the GTP 550 for Christmas to replace a > 10 year old GFP 565. We both agreed that the GTP 550 was really horrible - the music sounded like it was being played in a bucket. We returned it the day after Christmas.

I was using ADCOM 565 mono block Power Amp. to drive my INFINITY KAPPA 9 .i AM LOOKING FOR ANOTHER PAIR TO PLAY MY 2nd pair of kappa.
Adcom is among the best in the market. Pricewise and performance
Dadhou

Adcom 555

I've had the Adcom GFA,P,T. for 11 yrs and it has served me well with wonderful
reproduction Neutral with 3 point to the bright 1-10
To he that thinks this is a 1 out of 5, get some Thiel Speakers and enjoy.

Adcom equipment is simply the best bang for the buck.

I can't believe that this pre amp is getting such a lousy write-up.

I have a friend who has the Adcom Preamp-Tuner and the 50W per channel adcom amp with a pair of B&W 602s and an 8" velodyne sub. It ain't heaven but it's certainly better than a receiver and pair of tin cans which seems to be what people are saying about Adcom's equipment. I plan on having my equipment for a long time and am more than happy with it. I would recommend Adcom to anyone who asked. I would rather have a Conrad Johnson tube amp or a nice Levinson or Krell amp etc. but don't have that type of cashola. If you don't have a million and want a system that sounds like a million, you would be wise to check out Adcom. They are not top shelf high end but then again most people I know would be more than happy with a Mercedes Benz even though it is a little less of a car than a Rolls Royce. If you can live with the Benz, get Adcom, if not get the Grand Slams and the nuclear power plant you'll need to drive them.

Similar Products Used:

I have a pair of GFA-565s with the GFP-565 and a pair of Dahlquist DQ-20s. If that ain't heaven it's liable to be as close to that as I'm going to get in this world.

What the #$@* are people talking about here?
I have had various PreAmps over the years and from $400-$1200 and none have outlasted the Adcom. Further, I am currently using it with a Mag. 1.6 Q/R and it sounds great!

I am willing to bet in an A/B comparison NONE OF YOU WILL BE ABLE TO NOTICE THE DIFFERENCE between this preamp and others out there in similar price range or even 2x the price range!!

The difference you are hearing is called BULL S&*%!

The Adcom GTP-555 is to music, what "etch-a-sketch" is to art. The "one" star is only because there is no "zero" possible.