That other site in Australia is a distributor site as well, I believe. I don't know what their track record is, but we've definitely heard some negative about Pacetech specifically.
The Chinese site is a nice enough place to look at pictures, but Melody doesn't sell through that site, and doesn't generally answer email either. It's just a showcase for their Chinese market customers. They have a substantial brick & mortar presence in that part of the world, so there's not really any Internet direct effort. Also, many of the products we sell in the US & Canada are slightly different as Melody frequently tweaks for specific markets, so you may not see the correct specs or descriptions for a US-model amp there. As far as Melody is concerned, ACA is the official representation for them in North America, so they don't much bother themselves with customer-facing information.