Thank you @PolluxIn the meantime I have tested few dozen of 6sn7gt tubes on Atlantic. They sound very nice, better than small triodes I tried , but definitely not in the same ligue with l WE367a, El12 spec and Philips EL51 (4654). Best of them were Sylvania 6sn7gtb and GE 6sn7gt (att)

I’ve looked at the Summit before but to be honest have always been skeptical. They seem very expensive for a “new” tube and I’ve heard too many stories about early failures within a month or so of operation. Not that it’s every case to be sure, but enough to give me pause. Are you buying these from a dealer local to you or through a China source?The Sylvania JAN-CHS 6SN7WGTs (with adapters) were some of my fav's in the GA TRP, along with the VT231s I have stashed away as matched quad$. Select years sound much better then others I have, making them difficult to source the best-of-kind here given the many variations. The new Ray Reserve and especially PSVANE Summit 6sn7s delightfully more then give the Slyvania's a run for the money in my Poseidon DAC and Spatial Audio Raven preamp (sorry, TRP has a new happy home so nothing to compare here).
I stick with early early UX-280 or 80’s. I’ve tried RCA (pictured above), Majestic and Cunningham- as long as they are the “Globe” or “Balloon” glass they seem to have similar characteristics.Which type 80 tube you prefer?
I’ve not used a WE350B in mine- too hard to source a quad of and ridiculously priced. I have a few quads of 6L6G though (shown below) and if memory serves the Sylvania’s I have are really nice! I listened to a quad of RCA’s a couple of weeks ago and changed them out pretty quickly- not sure if it was just not a good gel with the music that night or if it was just my mood. I like the 6L6G though and continue to pick them up when I can.Can one use 350B (VT-115A) tubes in the Atlantic TRP? If so, how do they sound compared to some of the other options?
Thanks so much!
Chris

I have been using electricaly the same we367a (different shape and pin layout) and it is the best output tube that I have used.in Golden Atlantic (there's pictures and description few pages back).Can one use 350B (VT-115A) tubes in the Atlantic TRP? If so, how do they sound compared to some of the other options?
Thanks so much!
Chris
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