Quote Originally Posted by spendorman View Post
From memory! the TPA3116 is OK up to 24V, I've used mine at that voltage. You won't get much power output at 12V and 8 Ohms.
It's the modest heat dissipation of the small heatsink in the amp that could be an issue with higher voltages.

See the benchtest: https://www.youtube.com/watch?v=d6WkVSr_Hn8