Seeing the last reviews posted here are from 2013, here's mine.
I bought my XPA-5 new in late 2009, but due to space constraints (read : no room to setup a proper 5.1 system) it was actually fired up for the first time only two years ago after moving into our current house.
"It is folly!" I hear you say, "one does not simply leave such a beastly amp starving for some audio transients to crunch!"
Well what can I say other than : it was worth the wait !!
The XPA-5 sounds as "real" as possible to my ears. It has the kind of punch / attack to it that I think makes dynamics and transients, in recordings and movies, sound as they should. I you were to hear an explosion in real life, you'd hear (and obviously feel) the shock from it. It would not be subtle. That's the kind of transparency I've come to appreciate with the XPA-5. It does not "smooth things out" for you. It does not make everything "comfy". I feel it is uncompromising, unforgiving in its approach to deliver power and that's what I like.
I've had no issues, no hum, no noise, no nothing. We've had an episode of fluctuating power recently, and I guess it was bad enough as the amp shut itself down at some point (as did my Onkyo), but it went through without a hitch.
I even get compliments on how badass it looks!
All in all, the XPA-5 is one hell of an amp.
HT system : Onkyo TX-NR1007 as pre - Emotiva XPA-5 - Polk RTi6 fronts, CSi5 center, RTi4 surrounds, PSW505 sub - Panasonic TH-46PZ80U
I love Emo amps! They are amazing value no matter which one you get.
Transport: Sony UBP-X700 UHD-Blu ray player spdif PC using Musiland Digital Times WASAPI via BNC connection - DAC: DC-1->XLR XPA-1 , RCA->Basx A-100 CD: Denon DCD 600 PCM 61 DAC. RCA Amp: XPA-1 gen 2 using XLR connections. Speakers: Axiom Audio m80 V3, Sennheisser HD700 headphones. two pairs 12 guage each bi-wire speaker cables per monoblock Headphone amp: Basx A-100 (INCREDIBLE VALUE!!)
I have the XPA-7 and love the sound in two channel mode. I feed it from a Wryed 4 Sound pre-amp.and a Marantz 7702 in multichannel mode.
Optoma 8600 projector, Marantz AV 7702,XPA-7,UPA-500, Wyred4Sound STP-se pre-amp, Audio Space CDP-8A cd player, Sony BDP-CX960 changer, Toshiba A35 HD-DVD, Music Hall 7.0 turntable, Sony HAPZ1ES music streamer, OPPO BDP-103D alregion Blu-ray player, dual Rythmic FVX15 Subwoofers in front and Epic Tower in back, Salk Sound HT'3's for mains, HTC SAlk center, ERD-1 for surrounds and backs and four ceiling speakers for Dolby Atmos ,GIK acoustic ceiling panels, GIK free standing Acoustic panels