A customer says about:
"Upon installing & biasing the new tubes, I noticed a right away increase in transparency, detail in resolution. It became even more obvious when I upgraded the speaker cables to the new Cardas Cygnus. Also, an increase in depth very noticeable with either set of cables.
Also with both set of speakers, there was no brightness at all with these new tubes. No forwardness either. Overall, these new KT120-(Z CB) are definitely an upgrade over the Tung-Sol. And so far, they have been very reliable. And they look good too."
All Psvane tubes are selected to the highest grade and re-tested before the shipping.
Suggested burn-in time is 30-40 hours
