Psvane KT88 tubes in VAC amps

Hifimaniac,

I've been considering their new design, Psvane KT88 TII and am curious of the differences you observed while listening to the two?

I have some reissue Gold Lions coming in to try and have heard from many that they are great tubes if matched correctly but we shall see how they compare after about 100 hours of burn-in...

Thanks,

Dr. John,

I have been experimenting with Psvane 12AX7 in my Vac amp in position V01/02 and 4. With Psvane in pos 1&2, you will get a deeper soundstage, super black background and more transparency but will lose some bloom and a more forward soundstage that the stock 12AX7 provide.

The Psvane in pos V04 provides the best compromise with the bloom of the stock tubes but with more transparency, lower floor noise better placement of image with the soundstage...

Still debating the Psvane KT88 TII...

Dr_john,

Thanks for your reply. I'm using the new Black Treasure KTZ made by Shuguang and have heard the Psvane T-II are better but with reliability issues...

I've read that small signal tubes takes 50-75 hours of burn-in but if they require 300 hours I'm going to put them back in for another 100 hours and reevaluate.

My observations so far are they have a wonderful midrange but my stock Chinese 12AX7 have more zing and body but we'll see after another 100 hours if that's required.