this topic/thread reminds me of the experience i had with a local singapore hifi shop owner selling out of beach road (not adelphi where 97% of all high end audio is sold in singapore), AV something something was the shop
wanted an audition of a class d amp, and sizing me up, he 'politely' bamboozled me with a demo of his (one speaker hooked up only) self modded Qacoustics speaker which even after mods, did not sound good at all.
(man he could talk and talk, but never once allowed me to listen to the amp i wanted to ...ahole...)
anyway, discussion turned to me wanting to buy from china, since he was not gonna let me buy from him (wanted to sell me an italian amp that looked really shoddily made that was 2000% over my budget) and he WARNED me in no uncertain terms that the metals used in china amps CORRODED in singapore weather unless TREATED by HIM and HIM ALONE who holds the magic knowledge of china amp maintenance so i better buy through him instead
to date i never went back to that ogre's shop. i also bought a number of chinese amps with no corrosion issues even after many years of use
sellers, eh?