Adcom GFA-7400 Amplifiers

GFA-7400

5 channel Amp, 100watts per channel @ 8ohms.

User Reviews (7)

Showing 1-7 of 7  
Adam Omelianchuk   Audio Enthusiast [Aug 03, 2014]

I bought this amp off of ebay hoping to use the pre-amp outputs on my receiver for home theater and stereo listening. It looks nice and is sturdily constructed. However, one of the surround channels was defective and sent direct current to my surround speaker and killed the woofer. I don't know why this happened, and I bet it could be attributed to shipping the (the ebay dealer tested it before shipping and said it worked fine - got a refund).

There is also a startling "pop" I hear every time I turn it on. I've heard conflicting reports about this. The Adcom support worker told me this is bad for my speakers and I should get it repaired right away. When speaking with several authorized repair men, however, they told me I need not worry about this as it is the capacitors "balancing" when powering up and the current sent to the speakers is not unsafe. Newer capacitors aren't as loud, but old ones are. They said there would be time to bring it in and have it serviced, but not at this point. I guess it is common on these amps not to have a speaker protection circuit (that click you hear on others after you turn it on) that allows the amp to properly power up without letting your speakers know about it. It also "dumps" the power when turned off making a nice little thud in each speaker per channel.

I write all this up, because I consulted these reviews when I bought my amp and didn't see anything like these issues reported. So for future ebayers, beware.

With that said, this amp sounds beautiful. I currently use three channels for stereo listening and a neutered home theater set up (no surround sound), and I am surprisingly pleased. I removed the fuse on the bad channel, and it has preformed magnificently. I will be using some speaker selectors (Adcom GSF-3s - also on ebay) to put a switch in between the speakers and the amp to filter out the "pop" at turn on and turn off, but I couldn't bring myself to get rid of it after hearing how good it is with my NHT SuperOne and Boston Acoustics CR-400. Since I don't require audio perfection, I can live with adding these additional components. Perhaps some day I will get it repaired.

OVERALL
RATING
3
VALUE
RATING
3
polocsg   AudioPhile [Mar 24, 2003]
Strength:

Price - got it for a steal Great for movies and tons of power for just listening to music.

Weakness:

No THX Cert. Comes with basic detached power cord. New power cord a must Not a tube amp

Was doing a major upgrade to the system and needed a seperate amp. I have been following Adcom for years and was just waiting for my turn. Always impressed with thier price and specs. Placed the GFA-7400 in the system and was going to by-amp the front speakers (150watts 4ohms). WWWOOOWWW. No need to by-amp, there was tons of power. Cant wait to by-amp (need a bigger room). Very impressed with the sound stage and the highs are very clear with very tight bass. System: B&K Ref 30 Pre-Amp Pioneer Elite DVD MSB Tech Link II DAC Monster HTS3500 Monster Cable M-series cables Martin Logan Aerius

Similar Products Used: B&K HK Parasound
OVERALL
RATING
5
VALUE
RATING
5
levir   Audio Enthusiast [Mar 12, 2003]
Strength:

Endless power in my taste.

Weakness:

It is not Krell, Parasound or Bryston.

I have this Adcom GFA-7400 for a while now and really liked its sound. It sounds good playing music and watching digital movies. I use an Adcom 860 pre-amp, Monster Cable M series cables, Adcom 700 Cd and Klipsch speakers. Together, this amp sounded warm, detailed and open. This amp excels in movies and will never run out of breath. Bass is tight.

Similar Products Used: Adcom GFA 6000.
OVERALL
RATING
4
VALUE
RATING
5
v3pcbl   Audio Enthusiast [Nov 29, 2002]
Strength:

Its a real 100watts per channel. Quality - Don't be afraid to push it.

Weakness:

Cannot link to daisy chain multiple amps. Must split the Input from the preamp. Not a big deal.

Bought this based on my experience with adcom products in the past. I also have a GFA545 that I've had for 10 years. The 7400 is very smooth, and I would recommend anyone whose looking at amps up to $2000 to audition this - take it home listen to it in your home. I'm running Infinity speakers - I use the 545 to power a second set of Klipsch HeresyIIs. Surprisingly these two speakers sound well together placed properly - as nothing can bring out a strong vocal like the klipsch. Adcom can sound bright without a good preamp, especially with any horn speaker. Any component can be a limiter. If you have a good preamp and cables, this amplifier is the best $800 -$1000 you can spend. I auditioned it in my home vs a B&K, and it sounded better. It won't sound like tubes, but nothing will.. Spend the other $2500-$3000 on a good preamp. I will likely end up getting klipsh all around System: HKSig2.1 pre Adcom 7400 5ch Adcom 545mkII 2 ch Infinity ref2000.6 main Klipsch HeresyII main Infinity center, rears

Similar Products Used: adcom545mkII
OVERALL
RATING
4
VALUE
RATING
5
Tom Meyer   Audio Enthusiast [Aug 31, 2002]
Strength:

Great sound, oodles of power. Lights up my KLF-20's, C7 and R3's. Tried it on my custom Scan-Speaks - wow!

Weakness:

Sensitive to power surges? No remote on/off control

My GFA-7400 is in the shop for the second time and I miss it dearly. Both times it was the result of lightning strikes, even tho it's on a surge strip which protected 3 VCR's, an RCA satellite receiver and a Sony 9000ES. Adcom fixed it the first time free under warranty even tho I told them it was a lightning hit. I'll buy a better surge strip and install a protector on my power line. If they tell me it can't be fixed, I'll buy another.

OVERALL
RATING
5
VALUE
RATING
4
CEDRIC   Audio Enthusiast [Feb 27, 2000]
Strength:

Reasonably priced for a 100watt five channel amp., Nice Clean ouput

Weakness:

None

I have had this unit for little over a month and i must say i am definitely satisfied with my choice to purchase this unit. My setup:
HK AVR 65 (preamp/proc)
Adcom GFA 7400 5CH Power Amp
Dennon DCM 370 CD Changer
Pioneer DV-414 DVD Player
Definitive Tech Speakers: BP8B Fronts, ProCenter 100,
BP1X Surrounds, ProSub 100

For the size room that i have The HK alone would probably suffice(75 watts 2ch, 65watts surround modes) ,but i wanted alittle more umph:)the Adcom has giving me that.
Nice clean power , no distortion or clipping. very pleased, would definitely recommend.

OVERALL
RATING
5
VALUE
RATING
5
Allen Monroe   Audio Enthusiast [Dec 23, 1999]
Strength:

Good clean power, relatively cheap

Weakness:

None really (it does what it should)

Since no one else reviewed this, I figured I would. I have a full setup of Martin Logan speakers (Aerius fronts, cinema center, and 2 pair scripts for the rears (7.1 setup with Lexicon DC-1)) I was going to buy the more powerful GFA-7500, but decided to audition this one first, for potential cash savings. It has plenty of power to play the Martin Logans to reference levels (and beyond). The clipping lights never light up! I'm glad I saved the money and went with "only" 100watts per channel. Plenty loud (although I do have a "somewhat" small room, I think like 10'x20'x8x or so.

OVERALL
RATING
4
VALUE
RATING
5
Showing 1-7 of 7  

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