SMPS for class A amps?
 

Is it possible to think of SMPS for class A amplification? I have previously built a DIY version of the mighty Pass Labs Aleph 1.2 with a conventional PSU. However, I am thinking of building a Aleph 30 or Aleph X to keep my self busy. As I use a SMPS for my DAC with success I was thinking that this may be a good match for the Aleph 30.

Thanks for any insight.

BTW: Is it possible to get SMPS to deliver 60v out (for my preamp)?

Folke

It's been done in a commercial Class A / AB amp -- here

I have a pair, they have a little hum problem which can be worked around. The SMPS inside puts out 67v / 800VA :hot: Too hot for the climate I live in, and they consume alot of juice. I don't need 200wpc either, so I'm planning on gutting the amp and putting in a lower output and linear class A.

The company eventually discontinued them and changed back to linear.

Hi,
keep in mind that your ClassA will require rail currents that vary from Ib +-Ib = 0 to 2*Ib.
Will the SMPS manage that?

If it were a push pull topology then max current can be many times Ib.