Home Tubes Asylum

Questions about tubes and gear that glows. FAQ

If you are experiencing micro phonics with the 12au7(s) used in...

the gain stage of the preamp (it feeds the headphone stage) you could try later production short plate 12au7's from the Mullard Blackburn plant as they tend to stay quiet if properly tested/screened.

They are usually under $100/matched pair.

The ones I use are from the late 60's/early 70's and they are typically branded with the Amperex Orange World/Globe label.

Brente Jesse sells them, for certain, but other tube vendors may have them as well.

In my preamp/system they are similar in sound to the older long plate versions.

This post is made possible by the generous support of people like you and our sponsors:
  Kimber Kable  

Follow Ups Full Thread
Follow Ups


Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.