New Class D amplifiers


Hello. I'm very interested in getting your opinion on the newer Class D amplifiers.  There has been a couple of very positive reviews (by Guttenberg) of the Bel Canto C6i and NAD M23.  These, and perhaps some others are offering new technology that significantly lower the class D noise level and other drawbacks.    

I currently use a Class A amp, Pass Labs INT-25 (with Dynaudio Heritage Special speakers) which has a wonderful sound. But I am transitioning to another location, and due to using Roon primarily I find that this system stays on most of the day.  Due to heat and power usage of Class A amplifiers, I'm interested in translating to Class D if I find something comparable.

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Showing 7 responses by erik_squires

AFAIK, ICEedge was relatively new.  ICEpower however has been around for much longer.

So when we say "legacy ICE" I have to believe you mean ICEpower.  Maybe I'm mistaken.

All I can say is I remember when a certain member of this forum would simply not leave anyone who liked Class D alone, and insisted that Class D would finally get listenable with GaN. 

Hahahahaha.

Don't get me wrong, I'm all for technological improvements, but I see more clear innovation and utility in Atmasphere's amps than in doing the same old thing with GaN (apologies to you Technics fans!)

@aldnorab - There is! My amps did not take advantage of this feature so I’m not sure if that would fix my problem. :)

My 250 ASP units were 2W in Standby (not used) and 7W idling.

Forgot something important. As ithers have discovered, my IcePower amps need 48bhours of being on to sound good. No idea why. Don’t need to be playing, just stay on.

It is warm up time, not break-in.

@jbuhl AFAIK, the Edge products are modular.  They sell a chipnand design guidelines and you put together the surrounding circuit.  This allows you to create almost any sized amplifier module.

Icepower is their pre built amp modules.

@tweak1

 

Sorry to point out something obvious but the picture of the amplifier board inside says "ICE" right on the circuit board. :) Look just to the left of the big filter caps.

 

Inside of PS Audio PS1200

I am a huge proponent of Class D, not just the newest models. I like IcePower amps a lot more than I like some megabuck Class A, but not as much as I like my current Luxman.

The point is, I find that too many audiophiles are stuck perpetuating an amp class discrimination with stereotypes that haven't been true since the 1990s.  While the latest amps from Technics and Atmasphere may be great, there was nothing wrong with Class D, in general, five years ago either.