Tripath AMP6 alternative

I have 2 built AMP 6 amps that I purchased and built years ago from 41Hz. Love the sound and these fit nicely into smaller self powered speakers I had built. Does anyone have ideas for a substitute you can find today? Top priority is solid sound. Love the sound of the tripath. also , small size and low heat. Not needing much power. The 20 / 25 Watt per ch 8ohm is good.

Thanks,
Andy