SET the best?

Compared to other SET and PP tubes, 845 always exciting, fast, immediate, impactful. Can also be refined or relentless, synergy important for last two. I prefer 845 driven by 300B, allows max refinement.

Speakers for SET, usual suspects, Klipsch Heritage, Devore, Omega, I've used Alon (now Nola), also used Merlin VSM-MM, Spatial Audio, Zu, always been curious about Pure Audio Project, Coincident, Audio Note, some claim Tekton, Charney, Coherent, Reference 3a, Avantgarde, of course I'm missing some.

I want to add vintage speakers to the list, like:

Altecs - VOT A5 A7, 19, Valencia, 604.

Old Tannoy - Silver, Red.

Old JBL L200.

Used full range: Lowther, Klangfilm, Telefunken.

New full range drivers like:

Audio Nirvana, Lowther, Fostex, AER, Voxativ.

I use myself Altec 604E. They can be driven easily even by 45 tube.

how would you describe the sound of a 845 tube?

You can’t- any more than you could a 300b or type 45, because the output transformer and the individual tube’s match to it plays such a critical role.

People often say the tube has a certain sound. But with all the differences in transformers there's no way they could possibly tell.

People often say the tube has a certain sound. But with all the differences in transformers there’s no way they could possibly tell. ~~~~~~~~~~~~~~~~~~~~~~~ The local tech here also pronounces trans quality especially in SET desogns,, **only the best will do..***, His pure Colbalt in the UX250 vs say Z6 or Z11 steel,

are we talking nuances of dif.

I was refering to general charachertistics f the 845,

. I’ve read good things about the 2A3,, then here we read the 845 is simply gorgeous. Another comment likes the 300 as driver stage tube,whereas my tech says avoid 300B in any part of the design. He has no sympathy for the 300B, and yet some big manufactuers employ the 300 as driver tube. I guess as with all amp designs everyone will have his particular preferences. The 2A3 arrives next month, its a intergrated with my fav pre tubes AX and AU. Last note, what keeps me away from considering the 845 amp, is the weight, All offerings are over 70 lbs,, Even though it will not be moved around much,,I just don’t want a amp over 60 lbs, as my ultimate limit as I age. The 2A3 is right at max, 60 lbs. Lower weight = cheaper trans. I get that. But it is what it is. The Defy is 70 , one is enough. 60 lbs I can lift w/o injury.

Klangfilm, Telefunken. ~~~~~~~~~~~~~~~~~~ I’ve must have posted this YT vid at least 10 x’s here on Audiogon,, why not 1 more. Yes I understand the music is not at all demanding, and recorded with fantastic early 1960’s technology,,however have you ever heard such purity in vocals. The speaker circuit is going full circle,, it will come back to Full Midrange Speaker ye once again, starting in the 1920’s, In china, the FR is ever more popular vs xover/low sens types. 1st up, Coral Beta 10, have you ever heard,,,**FR lack bass**, hahaha well here ya go, have you ever heard such PERFECT bass repsonse in your life?? I have NOT