Psvane KT88 tubes in VAC amps

Listening to them open is at once frustrating and rewarding.
I've yet to identify a sonic signature for the full complement of Psvane's, but I can say at this point that they are very refined. Refined and correct. Maybe that's a function of the whole being greater than the sum of the parts.

ECM live recordings of Schiff's Beethoven cycle are a pretty reliable benchmark for piano sound. But for finesse, try Kissin's version of Glinka's 'The Lark'; the Psvane's handle its upper octaves with breathtaking ease.

Dr_John,

After a few months of burn-in, how's the all-Psvane tube complement sounding in your VAC?

I'm thinking about rolling the 6SN7 tubes in my 300.1a, looking for a little more body and warmth without sacrificing the crystalline clarity of the stock VAC tubes. Suggestions, anyone?

I've retracted my Psvane endorsement as one of my 12Ax7TII tubes failed and made me sad. It will take a while to recover.

i used treasure tubes from shuguang in my vac 450 and did better with the shuguang sc from kevin

I read through this topic, , there is no real bonifide , fair , through, unbiased, review of how the P KT88's acutally respond in a amp, for fq resolution, vocals, bass guitar lines, snare drum, etc. Nada,,,looks like i will have to purchase 6 for one channel in the Defy 7. 
= late 2020. 
I am using Shu 1990's production of a  88 designed for ARC, 
Clean, smooth, bass, but have not heard any others so its impossible to say, how great/poor this 88 really is , 
I mean to say, there is no smokiness/muddyness/no distortion with these 88's, 
Will the Psvane offer more dynamics/soundstage etc ?
Buying for 1 channel only. 
btw IMHO the KT88 is the superior power tube to own,. 
Shoots out the KT90, EL34.
I wonder how the 88 performs vs the 120/150;'s??
For my needs there is only 1 choice = 88's.  120/150's are overkill for my small room.