Tubes Asylum

Questions about tubes and gear that glows. FAQ

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

KT88/6550 suggestions

Posted by Thermionic27609 on March 26, 2017 at 15:16:21:
I'm installing the tubes4hifi 12AU7 driver boards in a pair of Dynaco MkIIIs for someone, and we need to choose the output tubes.

He describes his listening tastes as 80% Classical and 20% Dave Brubeck style jazz. Speakers are Sansui SP-3500. And he is older, which may have some bearing on perception of higher frequencies. I doubt the amps will be pushed hard. Preamp is a Marantz 7T that was reportedly completely serviced a few years ago, with some new electrolytics installed.

The budget limits us to current production types.

Suggestions for system synergy?