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This refurbished amplifier was purchased several months ago. It’s connected to a pair of old Kef 104 speakers. After a month of general use running it for 3 - 5 hours daily I decided to push it to it’s limit. After playing a dozen cd’s from Telarc’s 1812 overture too Dire Straits “Brothers in Arms” album it was clear that this amp can easily handle the most demanding dynamic’s with these power hungry speakers. It’s also very quiet with no perceptible noise or distortion. Highly recommended!
Verified purchase: Yes | Condition: Pre-owned
As I have come to expect from Adcom, the GFA-5400 is a great addition to anyone's sound system. Clean, powerful, quiet with clear highs and rock solid lows it can drive complex or low impedance loads with ease. Very well constructed with large toroidal power transformer and MOSFET outputs it is a welcome addition and contributor to my 10 speaker system home theater where it also works with a GFA-5500 and is a replacement for my GFA-545II which has been given other duties. Do be certain to give the GFA-5400 room to breathe, as it will run a bit hotter than it's bi-polar GFA 545II counterpart (true of all the MOSFET designs). I have had great experiences with Adcom equipment having 4 of their power amps and 3 pre-amps. I would recommend the GFA-5400 very highly.
I bought my 5400 about six months ago and could not be more pleased. In playing CDs through an Emotiva DAC, then a McIntosh C-26 preamp, and finally to fully-restored Acoustic Research AR-90 speakers (and with great Interconnects) it has to be heard to be believed. My ARs LOVE undistorted power, and being 4 ohm speakers are getting 200 Watts RMS/channel. The headroom is fantastic, the separation superb, and the bass extraordinary. Yes, with MOSFETs it does run pretty hot. I got an AV cooler for it which really helps, and I can stack my Preamp on top of it now.
I love Adcom!!! I own several. They are quiet, powerful. No problems.
Verified purchase: Yes | Condition: Pre-owned
THIS IS A VERY GOOD AMP. SOUND IS WARM AND DETAILED. ALSO HAS ENOUGH POWER TO DRIVE YOUR LOW IMPEDANCE SPEAKERS
Verified purchase: Yes | Condition: Pre-owned