Amp/Preamp Asylum

Looking for a new Amp or Preamp? If you're after tubes, post over here.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

RE: Solid State Power: MOSFET vs. Bipolar?

Posted by morricab on October 8, 2010 at 02:43:48:
I have found that JFETS and MoSFETS can be nearly invisible sounding in lower current applications (as input and driver stages), especially when used like a triode: single ended, Class A and no negative feedback. Somehow they still don't sound quite as good as a properly done tube amp but much better than bipolar amps.

When used in the typical Class AB, high feedback and complementary designs then I would say that MOSFETS seem to underperform compared to the best bipolar output stages but both sound bad.

The FET is a closer to tube substitute and when used in that way it can sound very good.