Wow!
Smoffatt, I heard a huge improvement and used a brass brush to clean my tubes with no ill effect.As far as tubes loosening,again I was fine with the tightness of the pins and the sound.Just goes to show that implementation is critical as well as a listening.I still think that the difference is well worth the effort for a tube amp and the differences are not subtle ( cleaning your tube pins isn't necessary because of the elimination of the arcing that use to take place between the tube and socket).For those willing to invest time and forethought, I highly recommend QSG.Hope this helps Dennis
Smoffatt, I heard a huge improvement and used a brass brush to clean my tubes with no ill effect.As far as tubes loosening,again I was fine with the tightness of the pins and the sound.Just goes to show that implementation is critical as well as a listening.I still think that the difference is well worth the effort for a tube amp and the differences are not subtle ( cleaning your tube pins isn't necessary because of the elimination of the arcing that use to take place between the tube and socket).For those willing to invest time and forethought, I highly recommend QSG.Hope this helps Dennis