What Richard said, and
I don't think it is necessarily a "good car audio board"
(a) They have fitted smaller electros than the footprint on the PCB, so they are probably cheap 85C 1000hr caps, that will deteriorate in a year or so with a typical car parked in the sun. They should really be 105C 5000hr rated, and operating at < 60% of rated voltage.
(b) They have 250V rated film caps , wtf! , this is to appease the golden ears brigade, seriously a 63v polypropylene cap would suffice, but doesn't have that valve audio look!.
(c) The TO-220 regulators? have no mechanical support, so typical car vibrations would fatigue the legs and they would fall off.
(d) This board requires a split power rail of +/-35V so not useful with a car's single 12v supply. You would need some kind of auxiliary power supply.
(e) to get the purported 350W out you need several 1000uF caps scattered around, that need to have ripple current ratings of several amps each, the caps on the board don't look big enough to do the job.
(f) The green connector with the output (in middle of PCB) is labelled "IN GND" , not "SPKR+ SPKR-" , if they can't get the simple things right, the rest of the design is suspect.