PSVane KT150

No problem - I’ll probably try the replacements when they arrive - I need a backup set of valves, would rather not buy Russian, and I’m currently out of pocket on customs fees and VAT!

New Sensor (Tung-Sol) came out with the KT120 around 15 years ago now. It’s a great product - I’ve uses dozens of sets by now, and still never a single problem.

Shortly thereafter, Psvane made their own KT120 copy. It didn’t go well, and was pulled from market. I remember lots of online discussion over these tubes either going bad quickly, or just causing problems from the start. And it seems every time they tried again - you get the same stories. Nobody ever rode off into the sunset with those tubes. And now they’ve copied KT150 - you couldn’t pay me enough money to stick those in one of my amps.

As far as I’m concerned Chinese tubes stop at KT88 (here at least - they’ve made some good ones, although the original Shuguang factory seems to be deceased). Why risk anything else?

Revitalising this thread: PSVane finally got their Horizon KT150s back to market after revising the design. And sent me a set. This set worked well in my V110SE - I gave them 50 or so hours to settle in, then made some comparisons with a new set of Tung Sol KT150s that I'd bought in the meantime. In short, the Horizons had a very extended bass (I had to turn down the bass control on my Martin Logans by a couple of dB) but a slightly harder, more 'digital' sound in the upper mid-range and treble. And the bass, although very extended, was less well defined than with the Tung Sols. The bottom line is that I've decided that the Horizons don't suit my system particularly well, and I've gone back to the Tung Sols. HTH…