Coincident Frankenstein mk.2 amps

Joe,
I haven't changed the 6em7 tubes (not many choices available). I've tried the RCA and Sylvania rectifier tubes and there's little difference. The intriguing rectifier for me is the EML 5u4 version. Good comments are made about it but they're very expensive (they're very large tubes as well).
Charles,

Yeah, those EML rectifiers sure look pretty. Maybe somebody on the forum will let us know how they sound.

Joe

Snopro,

I use the EML 5u4g. Gorgeous tube at night (meshplate as you may already
know) and yes, it is huge.

Sound: In my 300b SET, I think they are among the best I've heard. I also like
and use vintage RCA's. Can't speculate how they would sound in your Franks.

5u4g and 5u4gb are slightly different. Some amps can use either, some can't.
Make sure yours can if you decide to get a pair.

Yes, it is a gorgeous tube when lit. Thanks for the heads up!If I'm ever ready to purchase, I'll make sure it's compatible in my amps.

Hi Onemug,
I`m begining to understand your admiration for EML tubes.The more my EML XLS accumulates playing time the better it sounds, I`m truly enjoying this tube steadily more as time passes by.It`s powerful and dynamic yet has refinement and suave musical grace.
Charles,