Class-D amps - a different re view


Martin Colloms, the editor of HiFi Critic (ad-free mag from the UK) have recently published the review of several different Class-D amps, together with an in depth technical analysys and measurments.

His conclusions were not favourable, to say at least:

"I regret that not a single model merits unqualified recommendation. Price is not the issue; the poor listening tests speak for themselves. (...)
At present we have to take the prudent view that good sound might be possible from switching amps, but we haven't heard it yet."

BelCanto REF1000 (ICEpower) - score 10.5 pooints
"The ICE power module used has a dependable reputation, and the design is well built and finished as a whole. While I would not suggest that you shouldn't try this amp, on sound quality grounds alone I cannot recommend it for audiophile use."

Channel Islands D100 (UcD) - score 13 pooints
"While I have reservations about a number of aspects of sound quality, and advise personal audition, given the solid lab results (...) the overall performance and the moderate price, these CA Audio monos do make it to the 'worth considering' cathegory."

NuForce 8.5V2 (proprietary technology) - score 9 pooints
"Yes, the price is good for the power output. Yes it's pretty, light, small and runs cool. However, the sound quality simply does not justify recommendation." (on top of that the NuForce amp measured very poorly - Elb)

Pro-Ject Amp Box (Flying Mole) - score 5 points
"I'm sorry to say that Project (...) was a real disappointment in the listening tests, and can't be recommended."

Just as a point of reference, recently reviewed Krell 700CX scored 100 points, CJ Premier 350 - 110 points and ARC Ref 110 - 135 points.

At least someone have had the balls to say it. This is why HiFi Critic is THE mag to subscribe.
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Interesting that the reviewer rated only the UcD amp (CI D200) as worth considering. I agree with the ICE/UcD finding, but lack of an assessment of a Tripath amp is too bad. My Tripath CarverPro ZR1600s are right up there with my CI D200s. However, the rating gap between all the digital amps and the conventional amps is so absurd that it calls into question the validity of the entire review.
Myrtle said it best. I'm sticking with my Bel Canto. If there's a weakness, I haven't noticed. Too busy listening to music.
I have Trend ta 10 and it is superb amplifier for very little $$$ when driving Klipsch LaScala horns and when it is battery powered...I have also Shindo amplifier, which is also very nice with the same speakers. The sound of each is different, but if you listen to music, each of these amplifiers can get you "involved" and it is for me the best, you can ever dream of from HI-FI!!!
if they keep making them, it means there is a market for these amps. I personally don't like the sound of Class D amps but know people who do. Some people don't like tubes, some don't like solid state. It doesn't make tubes better than SS or SS better than tubes.
It's personal prefference.....whatever works for you in your system.
Ladies and gentlemen of the jury, this is silly. Even a casual read about Class D amps will make it obvious it's all about system synergy. There are so many variables!

Maybe I just happened to get it right.

I'll bet if someone invented truly perfect sound reproduction it wouldn't sound perfect to some people who hear things in their own way.

As for measurements... don't we all know that better testing gear doesn't always sound better?