ICEPower 125ASX2 Class D Amplifier Review

[zdykstra]

I have a pair of Bel Canto REF500M amps that were on 24/7 basically since I bought them in 2014. I recently unplugged them before a storm came through and they didn't power back on.

I opened them up and checked the fuse on the custom PSU and the fuse on the 125asx2, both good. The Bel Canto PSU board is outputting 340v DC, but the silkscreen suggests that it should be 310v. However, I can't find any documentation at all, anywhere, that says what the DC input voltage _should_ be. I pulled a module from a Ghent Audio amp I built; it powers on with 340v DC input (after removing the jumper from the 115v selector).

I'm planning on buying a pair of boards from PartsExpress, but before I feed them 340v DC I'd like to sanity check that. Does anybody know what DC voltage they want? Or should I just give up on the Bel Canto PSU and feed each board 120v AC and call it good?

Answering my own question - Bel Canto confirmed that 340v is the correct DC input voltage for these.

 

[maxchau]

I’d say the NCx is more competition for the Icepower 700as and 1200as modules. I was torn between an NCx and building a second 1200as to run them in Mono and went with the latter. Very happy but still I gotta assume that hypex is fantastic too. I have the little nc250mp and it’s fantastic.

Class D has come a LONG way but snobby audiophiles still reject it

You will be even happier when you add a DC blocker board in front of each amp. They sound smoother and cleaner. Amazon has them for $17.