So what are the quality level of usher gears? I live in Taiwan and Usher has several retail outlets throughout Taiwan and their prices are waaay below (like 1/3) the prices for exported stuff. The S520 only costs like 100 dollars US in Taiwan. Does that mean they save the crap for Taiwan user and ships the good stuff to overseas? I am thinking of buying their integrated amps (AU-7500 which appears are not sold overseas) and the s520 speaker. How can I get a part kits for the mods? I really dont want to pay 4 times the prices of the speaker just for a minor mod...