JumpMarine
18 watts of Mayhemologist
Had it in for about 6 months and it's been perfect and sounded beautiful in my 18 watter. I started losing some volume last night and then it went really ratty sounding. I really liked this tube and will get another one. It's funny, I've been running some JJ's for about 3 years now(in different amps) and I've never had the slightest hickup with them.