Hi,
Like you I became interested in tubes after hanging around this forum reading about horns and decided to try a small tube amp while waiting. I found a $151.95 (delivered) 2 X 8 watt kit and decided to assemble it.
When the kit arrived my secretary wanted to build it and did so in one morning. It did not work and a few minutes of investigation using common intelligence revealed a probable cause of a bad power solder joint. A quick repair and the sound began to emerge. Great sound from the speakers in my office with a direct couple with my $50 DVD/CD player.
A few weeks later I finally got my K-Horns and attached the tube amp. Great sound. Most likely not my final tube amp but I sure enjoy it - especially for the price.
Here is a web site for the amp kit: www.tubeaudio.com Look under the tube amplier kit section.
The power switch is mickey-mouse and I advise replacing it while building.
Enjoy,
Lee