I’ve been taking apart a few old tube stereo consoles to convert them to guitar amp. Some old solid state stereos I took apart for parts too, so I can mod the tube ones.
First one was a Sparton brand, with two single ended power amp channels (they are stereo, duh!) I kept one and built a JCM800 preamp for it. Sounds quite good with an overdrive in front and some bass cut, could use some tweaking.
The other is an Admiral brand, nicer starting point with the push pull EL84 power amp. For that one I cloned my Boogie Mk1 preamp, with some simplifications and alterations such as single input, lower coupling caps values to brigthen it up a bit etc. To my surprise, I won’t fully admit it but I think I like the tone better than my original lol Made a wooden head out of the stereo panels too, pretty rough looking, with mismatched shaft pot lengts and diameter, and mismatched knobs, since everything is salvaged from old stuff (except the coupling caps).
That’s what I’ve been up to lately, learning a lot in the process. If you google “converting sparton stereo console” or “converting admiral stereo console” you should see my threads on tgp.