I have an assortment of tubes that I bought for my Zen amp.
There are 3 5U4 type tubes: 5U4G Svetlana, 5U4GC Ruby, 5U4GC RCA.
The other 3 original tubes that came with the amp.
4 pair of matched Svetlana SV83.
1 pair TAD EL-84
1 Electro Harmonic (May be Harmonix, box is put away, too lazy to get up... )
And a few others. I even have a pair of EL-84s that I pulled out of an old Hammond organ amp.
There are some new tubes in the bunch, but I don't remember which ones, so I have to call them all used. (Gently used )
$100 0r best offer. + $15.00 shipping (Will refund difference if less.)
Thanks, Mike

I tried to talk Randy into some of these but he has a lifetime supply.