I don't know of anybody who has used other than the 6V6 or 6L6 in the amp. I am toying with the idea of securing some of the other tubes and trying them. But then you would have to play with the voltage regulator tubes with each one.

I have noted that with the 6V6 there is wonderful stereo separation and detail; with the 6L6 there is a larger, albeit slightly unfocused sound.

We need someone to undertake trying the Mini with the other 6_6 tubes that will work in it.

Yes, as I currently have a pair of RCA 6Y6ga tubes in my mini torii, they sound every bit as good as my other 6v6 tubes ( about 6 pair including the stock ones.  Probably even a bit more dynamic w more punch. You will notice that the amp runs somewhat hotter than w 6V6 tubes,  Steve said they will bias a little higher but no worries at all running them...

I also have a set of sylvanias 12AT7 tubes in place of the AU7's..  So I say grab a set off ebay,  about 20.00 or 25.00  a pair for nos, very affordable..

we just had a big cook out-fireworks night and about 20 folks gathered around the torii admiring its beauty visually and sound wise, with a few requests to set them up an out door sound system like mine.....  ;) Mark

Rivieraranch said:
"I don't know of anybody who has used other than the 6V6 or 6L6 in the amp."

juanitox  has 350B in his.  Not the Western Electric original, but a replica from the Valve Art company. He writes high praise of it. https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1261918683

I am glad I was of some use!    [smiley=laugh.gif]

I am considering scaling back to a 6V4 or EZ80 rectifier to see how that works. I picked up 2 Mullard EZ80 rectifiers on a tube shopping expedition out of town.

Hi Rivieraranch,
An interesting report.  
Did you move on from the 6Y6 out of curiosity about other tubes, or did you decide you did not care for the punchy sound?  Or maybe it was the heat?