check out Shok Industries. Russel Wong has a headquarters in China and you might get pretty decent prices with the shipping since its not halfway across the world. They are very high quality stuff, amps subwoofers and wire and sound deadener wise. FSD audio is also China based using Korean board amplifiers too with a cheap price tag than shok, not quite up there IMO but its a lot more affordable, they are working on their subwoofer lines atm. So far they only have amps.