Crack;Bottlehead OTL

[matts19]

I certainly hope so, I have been running one for a couple years now, as has my son, and one employee and a few friends.

When I say running one, I mean one variation of the 6sn7 or another. I have run dual 6J5’s and 7A4’s single triode versions that each require half the filament current of a 6SN7. I have run 7N7’s, the loktal version of the 6SN7 as well.

I run the same tubes in a Schiit Vali 2 that normally draws about 450 milliamperes of filament current but can handle the higher current for the 6SN7.

My favorite single tube is the 6N8S 1578 Melz (6sn7 equivalent), you have to be very careful which version you buy and they can be pricey because they are highly sought after. They sound very different than your normal RCA, Sylvania or Tung Sol so they may not be for everyone.

So it's been another 5 years since you posted above. Has vali 2 been working with 6SN7 all the while ? That would surely give us long term viability of Vali 2 with this tube !

 

[Paladin79]

So it's been another 5 years since you posted above. Has vali 2 been working with 6SN7 all the while ? That would surely give us long term viability of Vali 2 with this tube !

Vali 2 still works fine and now Vali 3 does the same. I do prefer other tubes with the 3. I got deeply into Melz 6SN7’s and those sound better in other amps including one I designed.
My design:


The 6SN7 is the native tube. Dual volume pots, 2 lb solid copper top, many refinements the Crack lacked.