Duncan's amp Mosfet Regulator

[josh777]

I can't find a post that references this design on the forums. For those that don't know it it's here: http://www.duncanamps.com/technical/mosfet.html . Is it largely thought that this design is outdated? Do people generally use the Maida type design now?

I'm planning to use these in a guitar amp, a variable one for the power amp, and a fixed one for the pre amp, if that makes any difference.

Any help is appreciated.

[SY]

It's a good design (though I wonder about the stability and noise without an output cap). It's unlikely to be significantly better than a Maida, and a Maida is simpler and cheaper. The Maida isn't the be-all and end-all, but it's good performance for something that simple, and for stages with reasonable PSR, it's "good enough." As is the simple diff-amp regulator like Duncan's.