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
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.
None of the re-issues will compare with a true Mullard(Blackburn Plant) GZ34, either in sonics or lifespan(metal base, or not).
If you listened to the real deal for decades, very unlikely you will find any "re-issue" worthy of listening to.