Home Tubes Asylum

Questions about tubes and gear that glows. FAQ

RE: GZ34 Factory C ode

"Did Mullard have a factory in Holland"

By the 1930's Mullard was bought out by Philips. After that Mullard was just one of many brand names used by Philips.

Philips had factories in England and in Holland and many other places.

The tubes made in England were normally labeled Mullard. But not always.

The tubes made in Holland were normally labeled Amperex. But not always.

Tubes made in any of the Philips plants could be labeled anything. Mullard, Valvo, Amperex, Siemens, Miniwatt, Mazda and others.

The codes tell you which of the Philips factories the tubes were made in.

Have Fun and Enjoy the Music
"Still Working the Problem"

Edits: 07/31/12

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

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.