I thought I would alert you all to a potential problem with the new Psvane Mk II tubes. The pair I purchased developed a spitting/sputtering noise after a bit of burn in (6-10 hrs). I thought it was amp but no problem with stock tubes. I purchased from tube-sale.com and when I complained that one tube was bad they sent me another. When all three started having problems I asked for refund. And, they are happy to give me a refund if I return the tubes. Problem is, the shipping back to China is over $200. So, even with refund, I only get $100 back on my $300+ purchase. Ouch! In fairness, they are trying to figure out a way around this but haven't done so yet.
Donald has the tubes right now and experienced same problem in his Stratus. I don't know the problem but I won't be purchasing tubes from China any time soon. The tubes sounded really sweet before developing the problem, by the way. If you want to give these tubes a try I would recommend purchasing from a US distributor in case you have he same problem I had.
I have been reading these posts and never thought I had anything to contribute until now.l
I plan to attend the event in Woodland Hills, CA coming up which is near my home. I am eager to hear other headphones, tube set-ups etc. I have T-1 phones and interested in upgrading tubes but can't afford to experiment as much as some other.
And, love my Stratus amp and experience dealing with Donald.
