Metal-base and non metal-base 5AR4/GZ34?


Sonically, what's the difference between the metal-base and non metal-base 5AR4/GZ34 rectifier tubes, Philips/Amperex or Mullard? Especially as they perform in the Modwright 9.0 SE preamp?
pmboyd

Showing 4 responses by jedinite24

Anyone have any thoughts on the Mullard GZ34?

http://www.dougstubes.com/rectifiers/5ar4-gz34/mullard-gz-34.html

I think this one is the non-metal base one.
Hi Electroid

You weren't kidding about the metal base GZ34 tubes. Pricing started around $300 all the way up to $799 for a single tube. I'll pass on those metal base GZ34s. They cost more than the SET amp I got. Those Mullard GZ34 re-issues look like quite the bargain compared to those metal base GZ34 tubes I saw. Thanks for chiming in.
Wow Schubert and Rodman. Thanks for the feedback. I guess ignorance will be bliss for me. All I have is the Tung Sol Re-issue 5AR4 as the rectifier in my Tom McNally 6BQ5 SET amp and I'm happy with the sound. I won't ever know what I'm missing as I can't justify spending at least $400 on a metal base GZ34 and no one I know as one they can lend me. Whew am I relieved.
Hi Rodman,

Yes. I missed that part of your post regarding the Metal Base or Not. I feel stupid. Thank you for including the link with those affordable. They are more within my budget and I can score one now and use the Tung Sol as a back up.

Thanks again