They are well known to market like expensive jewelry.
I know that........ but money makes the world go round
not first and not last case of someone exploiting someone's established credibility, then snatched by someone not worthy
just one of possible scenarios
anyhow - I don't know and I don't care - I'm saying that anyone claiming that size of heatsinks is enough for any 2*125W amp is deliberately avoiding truth
except if being D Class amp ....... in which case I'm not even slightly interested - there is simply nothing I would be capable to Babelfish
above my head and just by pure luck out of my area of interest