That's cool. It is amazing that you can still get the parts for such an old amp. I've not had to replace tubes/valves in my amp yet, but then it is a more modern model (Blue Jnr clone). I know the digital stuff is getting better, but there's something about that technology.
!BEER
It is, at the very least, romantic to me. The tubes were marvelous devices and gorgeous. Seeing the tubes glow is a wonderful spectacle. The Blue Junior is a great tube amp that you can repair with old-stock tubes when needed. :-)