Anything sonically resembling the SA-2 monobloc?

Greetings. Just watched Papa going through his rare transistor inventory and it got me wanting to build something class-A now. I need a project!

I still dream of my beloved Threshold SA-2’s. Does anything DIY- to anyone’s experience, sound anywhere close to the SA-2, if you have experience with it? I stupidly sold mine and not a day goes by that I don’t kick myself over it! TIA.

This was one 2-channel system with my dear Thresholds, a Shanling hybrid SACD and Martin Logan Aeon’s in a dual-function home theater I designed- before everything was hidden away in cabinetry.
 

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Thanks. Are these all stand-alone or are they adds-ones to an existing design? And is all of that all findable?
Concerned that my skills are not as refined as they used to be. Years ago I did do point to point wiring for preamps and tube amps As well as tons of Heath and other kits. My Iron game is still good, soldering iron that is. 😆