Rotel has it's own factory in China. So even the "higher end" electronics companies use inexpensive labor. In Rotel's case, it's their own factory, so it's not an outsourced slave labor type facility, but it's still less expensive to produce the products there, and ship them worldwide.

Working conditions are important. If I knew which brands employeed slave labor tactics, I'd certainly avoid them - even if it cost me a few bucks more.