Im using Mullard CV4003 in a Rogue RP7 now . I used them in a Rogue Pharoha for six years before i Upgraded my system . They still sound great and I hate the thought of replacing them .
MULLARD 12au7 longevity
I bought a pair of these from Andy’s Tube Services years ago for my Rogue RP-1. Thought they would have crapped out by now but they still sound good. He told me they would last a long time. Anybody got any reports on how long you have had these units in service?