lcd54222 saidLike many others I had replaced the tubes that came with the preamp (Psvanes - not sure how to pronounce that!) with the Tungsram 7DJ8 tubes (which I’m not sure made a “Huge” difference, but sounded quite nice. Recently, as others have noted, I began to get the low level thumping noise out of one channel. This was after about 1150 hours of play time on the Tungsrams…
Thanks, Larry
Although I’ve never heard any thumping, I did swap out the Tungrams (for new Tungsrams) after about 600 hours. To my ears, and in my system, the Tungsrams produce “magic” for about 500 hours. After that, the sound from the Tungsrams is just less involving. I found myself endlessly tweaking, and when nothing helped, I swapped out the tubes, and boom, the magic came back!
So, once I run out of Tungsrams, I’ll be back to the stock Pavanes.