There are plenty of Russian tubes made before the fall of the Soviet Union. These are indeed NOS! Certainly cheaper than expensive hyped - and used! - Mullards and Tele's!
Are Lamm preamps hard on tubes?
I have a LP2 and an LL2.1 (purchased about 14 months ago) and my system is missing some of the sparkle lately. I'm wondering if the tubes (all purchased as NOS from Brent Jessee) could be wearing out? That would seem awfully quick for 6922 and 12AU7s right? Not sure about the 417As in the LP2. Any thoughts for anyone's experience with Lamm?