What is the cause of Mosfet Mist or Veiling?

I agree, there is no such thing as Mosfet veiling. If anything this came about because of a great number of low cost Mosfet amps coming onto the market about 10-12 years ago. They were just not so great implementations and this is how that was manifested, imho.

The other issue of "soundstage" is a more complex issue and has to do with all sorts of factors. Most of them, again, have to do with the quality of the underlying circuit, and how it is implemented. Lesser implementations of otherwise good or excellent circuit designs will show various and assorted sonic "deficits."

Likewise better implementations of lesser circuits will do better than the lesser implementations of the same... of course, we're limiting this discussion to the amp itself.

I prefer bipolar amps but have heard some fine sounding MOSFETs. The main thing that I have read about MOSFETs is that they are not linear and need much regulation to make them sound good.

Hi Rwwear, if you remember reading that mosfets are not linear either you remember wrong or the material you read was wrong. Mosfets tend to have greater linearity then most bipolar devices.

The Gamut is a good example of what can be done with them.

My understanding is the same as Ralph's, that MOSFETs are actually more linear than bipolar transistors.

will

You could be right, I'm no expert.

Robt.