I've had this old Silvertone 1483 head for...years and I finally got it repaired and the Amp Man put a pair of Ruby power tubes in. It sounds so great I had to get a t-shirt. I'm a [novice], but at least my amp sounds great!" - David R.Neff
"Thank you so much for you[r] excellent service. Peter Diezel and I really appreciate your professionalism and great courtesy!" - Jens Kruse, Diezel Amplification
"...the quad came matched, then easy installed to my TwnRevRI and WoW!!... I will recomend [these] tubes 4all Twins users I know... So happy to hear my reborn Twin with that kick & soul that it just got. Thanks a lot and best regards to all crew at RubyTBS!!!" - Jorge Reverter
jordan@rubytubes.com