Price Paid:  $200.00 from Ebay

Summary:
First of all let me say that poor reviews based on what a product does not have or the reviewer wish it had should have no baring on the review itself. Do your research before buying something so you'll know what you're getting. No this preamp does not have balanced outs, phono, nor tone defeat....but guess what, I knew that going in. Base the review on what it sounds like in your system based on other SIMILAR products you have heard.....that means keeping it in the same price range as well. Okay, that's all for my rant.
I've only been using it a few weeks, but so far so good. I've not used too many preamps in my day, so basing it on what I've heard before. I like the Tuner, although I don't listen to much FM....I may just start.
It sounds nice and full, clear, clean and with good imaging. One complaint might be the remote's volume does have some pretty big leaps...oh well.
Might not be the last preamp I own, but worth the $$$ I spent on it.

Strengths:
Sound
Functions
Remote
Tuner

Weaknesses:
Remote volume adjustment not fine enough.

Price Paid:  $0.00 from Loan/Gift from an Au

Summary:
This is a temporary replacement while I complete the building of my version of Aunt Corey's pre-amp. It replaced my radically modified Hafler DH110 after it expired in the middle of a listening session. I am using a fully POOGED Hafler DH200 with full bore CAT-5 speaker cables into Acoustat 2-SW's. All interconnects are made by yours truly using Belden cable and Cardas plugs. I must thank Mr. T for the loan/gift of this unit.

Strengths:
Initially I thought that the highs were rolled off. After sufficient warmup (3 days) the highs extended themselves and the midrange and lower treble became smooth and sweet. I don't use the tone controls so I can't support others reports of boomy bass. The bass that I hear is smooth deep and powerful. The midrange seems to have remarkable depth for a Pre-Amp in this price range. The extreme highs seem to be a little down but this may be my speakers. The tuner section is very clean and picks up all the local stations with a smooth noise free signal. I have heard no bleed through from the tuner to the CD input or any other input. The remote is something that took no time at all getting used to. The mute button on the remote is a nice feature (the GTP-500 remote does not have mute). This unit has 2 full tape loops plus an EPL loop for a total of 3 tape loops, CD input and Video/Aux input, but no Phono input. If vinyl is important just use an outboard phono pre-amp. Although this unit is no longer available new you can find them on E-bay and Audiogon for very reasonable money. This is a lot of performance for the money ($500 new, $200 used). If you are looking for a tuner pre-amp

Weaknesses:
The only weakness I can think of is that this is no longer in production. What do you want for $200.

Similar Products Used:
I have used and have access to other Adcom's, Parasound's, Hafler's, AMC's and my old ARC SP-3

Price Paid:  $150.00 from Audiogon

Summary:
The GTP450 is a great preamp/tuner and it sure doesn't deserve a rating less than 4. The tuner built into this unit is excellent alone and the preamp section is just as good. I have used this unit on a Conrad Johnson power amp and it produced a great soundstage wide and deep with articulate detail and does so without harshness or glare. I realize this unit is midfi and it doesn't take the purist approach but i simply like the way it allows me to enjoy my music and that is the bottom line. Also i would like to point out that the new Adcom preamp/tuners do not sound as good as these older models because i have tried one.

Strengths:
Highly sensitive tuner-Quiet operation-Remote controlled-Nice presentation of music (not in your face) like some preamps)-Adcom quality

Weaknesses:
None

Similar Products Used:
Bryston, McCormack, B&K, Adcom, Conrad Johnson

Price Paid:  $250.00 from classifieds

Summary:
I was using a Keenwood C-2 at the time with a dynaco st120 & heresey II's. I got the gtp-450 & the gfa-7300. The improvement was beautiful, nice sound stage , very good musical pre-amp. I didn't however like the volume control on the remote it was either quiet or loud. But over all a very good pre-amp

Strengths:
price, good sound stage

Weaknesses:
remote control volume

Similar Products Used:
crown, nad, mcintosh,hafler

Price Paid:  $500.00

Summary:
I still say this particular preamp is probably the lousiest sounding piece of overpriced garbage I ever bought.HECK,I could not even sell it so I finally gave it away for free to a friend that had no choice but to use it since his preamp died on him and he even said that if he had the cash to spend it certainly would not be this brand or model--I am definitely not an advocate of ADCOM !

Strengths:
NOT ONE

Weaknesses:
PLENTY-OVERPRICED,MUFFLED BASS,JUST CHEAP !

Similar Products Used:
NAD,LUXMAN