BUZ90X for Aleph's or Zen's power amps?

[Alfetta87]

I have a lot of both BUZ900 and BUZ905 (Magnatec) in my stock, initially intended to be used in another Hybrid amp (push-pull Class A with 5687 driver), which I put on ice for now.

A friend said to me that this amp with these Mosfet's would sound "like from another" world.

Would they be suitable to be used in a Pass amp, such the 5 or the Penultimate Zen (the one I'm interested in)...?

Could'n find any IRFP044, 140, 240 or 244 here .

Thanks,
- dan

[john-china]

i think the transconductance of these mosfet is too low ,
maybe in push-pull circuit will be better than hexfet ,
in aleph circuit i only think hexfet is the best.

[Nelson Pass]

So try it and find out.

[Alfetta87]

Thanks Mister Pass, but can I try without major changing, and without danger?

They are expensive...

- dan