Okay well it takes precisely zero electrical knowledge to build a Dynaco. I would know, having built an ST400 as a teenager who was pretty sure electricity travels through wires. An old refurbished Dynaco would be one candidate. Another would be a Melody integrated, which is what I have now, no longer made but reliable and probably under $1k if you can find one.
Aside from specific amps, some general info it will help to keep in mind. Solid state watts are not equal to tube watts. Two different tube amps, 50-60 watts, drove my speakers just as well as a McCormack DNA-1 which is 150 solid state watts.
Everyone focuses on the tubes, when the reality of tube amps is a lot of the sound quality you get comes from the transformers. So if you find one you really like don't be put off by the tubes it runs, but go by the sound quality. That said, KT88 tubes tend to be really neutral and smooth, 6550 are a little less smooth, and EL34 have about as good a midrange as you will ever find. All of these can have really good bass, and extended treble too, it just depends on the amp design and transformer.
So between the high power you don't need and the high price you don't want this means you should be looking at integrated tube amps 50-60 watts or so. You do not need more power. You do not want separates. There are a lot of really great integrateds ranging from about $5k for a new Prima Luna (outstanding if you can swing it) down to whatever you can find, say something like this-
https://www.audiogon.com/listings/lis9hf6f-jas-bravo-2-3-integrated-tube-amplifier-tubeWhich might seem not enough power but probably will be fine and sounds like a pretty sweet little amp for the money.
