two things one I've already own a pass lab amp and the second one is 8 watts you would be severely limited to the speakers that you can hook up to it sorry to be such a drag
Dreaming of a DIY 8W Class A amp designed by Nelson Pass?
I've never built one, or heard them but this kit looks fun as hell, and includes everything you need:
https://diyaudiostore.com/collections/frontpage/products/amp-camp-amp-kit?variant=7072933085218