[jhrlrd]

I believe its the 5u4 you're referring to thats the big one. wanted to try a tele gz32 but unsure if its an equivalent. it might be lower current etc.
maybe Dan knows...

[rbbert]

5r4gys, although many 5u4g are about the same shape

You definitely don't want to sub in a lower power tube as a rectifier.

[rbbert]

After almost 2 months with the latest premium PSVane CV-181, I have to say I'm mighty impressed with them in this application.  Compared to my TungSol oval plates, these are completely non-microphonic, have a more defined bottom end , and really only give up a smidgen of upper mid lower treble smoothness to the TS.  Of course, they also cost almost as much