tru tech amps made in usa as much as can be. their boards come from somewhere near denver, their heat sinks are cnc's in usa, what ever circuit components they can get that are made in usa are used, they are hand built in so cal.
DD, uses as much made in usa parts as is available. and makes some of their own parts.
usa, denmark, sweden, germany, etc all have good made products. good quality control, good materials, good designs.
everyone wants to try and make a decent living. there's one thing with reasonable mark-up and gouging. american government gouges the hell out of companies that overseas doesn't have those costs. environmental, workers comp through the roof, unemployment tax's, business and labor tax's. if you make $10/HR, your employer pays at least another $10/HR in other expenses on you. it all adds up. i'm sure no one wants to live in a card board box because they can't make enough $ to live.
think about next time you're at work, tell your boss you want a 50% pay cut so he can lower his prices. that sure the heck won't go over well with either of you will it?
you can't compare the price of $2 a day, long duck dong, made sub with a DD for example.
just because both are speakers and look pretty much the same, does not mean they are. steel isn't steel. there are dfifferent grades/ qualities. just like all the rest of the parts have different qualities, specs, and tolerances.
like if you buy a cheap harbor freight wrench and try it against a snap on. any one who turns a wrench for a living will not settle with harbor freight junk. the open end wrench spreads easy, it breaks when you try to reaf on it, and it might say 1/2", but it's too sloppy and strips a 1/2" nut, too small for a 9/16".
and so on, and so on.