A bit off topic, but … when I played with tpa3116 cards one of the best mods where to switch the capacitors to bigger ones - I bought panasonic low esr . This card was also the reason I switched from class A/B amps , because it sounded better.With my A07 i was using a 24v 4amp supply since changed to a 48v 12.5amp being fed by 240v mains (live neutral earth all connected), The A07 does get a lot warmer with the bigger power supply.
Inside it I've upgraded the op-amps to Burson v5i-Ds (same as I used in my DAC-X6) I've also replaced the thermal compound for the amp chip, and changed all of the capacitors, all now 105c rated, the two larger 1000uf 50v caps were changed to some Rubycons although a different profile that keeps a bit more space between the caps and the heatsink, changed all of the other electrolytics, panasonic/rubycon 105c rated.
For the poly caps I thought I'd experiment with some old stock, physically larger ITT 1uf 100v and some old stock philips 250v 1500nf 5% axials.
More of a fun project than anything, What i may still do is put on some different binding posts / RCA connectors, change the 1uf 100v to some WIMA 1uf 250v and also change the 1000uf 50v caps to something higher rated, also considering adding a fan and some vent holes, Volume pot may also be worth looking at but I've not had any problems with mine seems to work well so I've left that alone. How much difference any of this makes well ymmv, I've taken no measurements other than listening and voltages etc via multimeter, Power supply made the most difference but as stated I was using a 24v rather than the usual 32/36v then jumped right up to the 48v.
Note: When I purchased my A07 it is not Aiyima branded, only has "power" and "volume" labels internally though it seems identical. The AUX jack at the back of the unit has left/right reversed but i don't use that, could be fixed though without too much trouble.