I don't have a tube amp any more but when i did... yeah I took an occasional sniff. One of the guitar players in my band has one and I still like the smell. After taking a whiff , I went into the room where my scuba gear is and sniffed my wet suits (teckdiver500 knows what I'm talking about).Then I went out to my garage and enjoyed the distinct aroma of my hot rod . Now I have this irrasistable urge to go out in my back yard and pee on a tree.

