Okay... finally came in the mail today. Ordered in last week from fleabay... I have placed it in V1 and it did pretty much what I have been told and as advertised. It's a nice upgrade to the amp. I was a bit worried about JJ preamp tubes as I've always found them a bit too dark for my liking... As expected, it is darker sounding compared to my other preamp tubes (Tungsol, RFT, GE, Raytheon, Shuguang) but it does allow me to use much more of the amp's preamp control without getting muddy. Very nice... it allows the amp to get more natural low frequencies and punch without having to use the resonance control which is something I only like partially... It was well worth the $17.00 investment. Thanks to the other members...I think Jethro...(forgive me if I forgot the name) whom mentioned this to me.