300b vs 845

What 845 tube gives the best overall sound?

they're more different than better-worse. What you got now? what you lookin to improve on?

I have a Viva aurora 845 driving Trios using regular chinese tubes. I have had thoughts I would like to try a 2A3 or 45 amp. I know it is less power,only a couple of watts. With the trios it should be enough though. Does anyone have any comments on the comparisons between these tubes and 845. Also, what about cryoed 845. So far I have heard mixed opinions.

I like the 845B tube best. I have tried standard 845's, 845B's, and 845C's. The 845B is clearly superior to the standard 845's. It has a much richer sound with lots of texture. I found the sound of the 845C's too bright for my tastes. The 845C's have more detail and tighter bass, but the sound is a little thin in my amps. On the other hand, the 845B's midrange is very full and pleasing at the expense of the frequency extremes. It kind of reminds me of the WE 300b sound.

Jeff

Regarding the use of 845B's with a Viva amp. The ones I used on my viva Solista glowed a most attractive cherry red colour before they quite rapidly failed. Presumably the voltage on the Viva is a tad too high.