I was messing around yesterday in the living room listening to different gear and after a while I noticed the distortion levels going up on the LSi 15s. I was like "great what now?" My first guess was that it sounded like the cd player, which is a Jolida tube output cdp. Fortunately, I had a pair of spare SED 12AX7s laying around and after I swapped them out all is good again. I asked the dealer if leaving the unit in "standby" would burn up the tubes and he said no. Well, I started to put the finger to the calculator and the tubes had roughly 5,000 hrs on them. Perhaps a bad batch? or perhaps that was just their useful life?
Everybody's talking about these EH 12AX7 tubes now. Might put in an order for them.
And no more standby mode for me either!