I really like this tube. I was running the Tungsul but felt they were too harsh and kind of dull. I tried one of these tubes in V1 in front of the Tungsol in an '82 Fender Champ II. I was pleasantly surprised! Now I'm curious how it would sound with two of these. I'm still finding great sounds with the only the knobs so it may be a while. If you are looking to try something different try this tube.