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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I am now driving my Magnepan 20Rs with a Spectron Musician III and previously a pair of Bel Canto ref 1000 monoblocs and both bested the big boy SS Class A and A/B amps that I have had in my system before.
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I'm going to assume that you took a snippet of his conclusions. I'd be interested if there were any supporting impressions. However, I don't see any above. Did Mr. Colloms say why he came to these conclusions?

All I can say is I'm running a pair of Bel Canto Evo 200.2's in bridged configuration and I couldn't be happier. They have the power to make my Martin Logan's come to life, and they sound superb -- smooth, musical and well balanced across the frequency spectrum. In my case they beat out other very well regarded older amps from BAT and Classe. If you have more info, please share it.
One thing about him-he speaks his mind and doesn't care what anyone else says. That is the prerogative of someone his age. It reminds me of the old phrase, "not always right, but never in doubt". I really appreciate his views on loudspeakers,cables and A/B testing. He has been around long enough to have seen it all.