critique my amp design please

[AudioGeek]

here is my amp design.

first mosfet running 200mA.

into a 1:20 step-up.

second mosfet at 2.5A

choke loaded 100mH with cap coupled to load.

20v PS.

any major issues with this? any ideas or improvements?

[ilimzn]

Be careful that Pathos doesn't sue you, they actually managed to patent a choke-loaded MOSFET follower...

[AudioGeek]

thats retarded.

well i guess i gotta look up the patent.

but, for just general design wise... would it work?

[Graham Maynard]

Zero Feedback Impedance Amplifiers

A long read but much info. Also

http://www.susan-parker.co.uk/zeus.htm

[Upupa Epops]

Yes, it will work... poorly ... but make research of blind lane...

[AudioGeek]

why poorly?

just wondering what i need to look at?

[lineup]

Originally posted by AudioGeek
why poorly?

just wondering what i need to look at?

As I see it:

1. The idea like such for a good and yet simple amp is Great!
2. The implemented result will be Entirely depending of Component Qualities

This means
* Best possible MOSFET, at rather high currents.
* Best possible and maybe even very Expensive Transformer.
... preferably custom made if not any suitable around


With 'result' in this case,
I mean BOTH sound qualities & real measured data.

There is Very Often a high correlation
between measured data/sound quality
... at least if it is Real High Fidelity we are looking for.

But in DIY Audio
there are people looking for anything and everything
Not necessary high fidelity.
We only have to read a few posts in this forum before we realize this.

No harm in this fact.
We live in a free world ... I hope


Regards
lineup