Well noted @mashif; having spent a significant portion of my career on supply chain technology I would further note that no one culture or region has a monopoly on technology or quality. While TQM (total quality management) concepts have their origin in the US, the execution of quality has advanced globally. One reason that the best micro chips currently come from Taiwan (but that could change).
Having seen first hand high tech US/Swiss medical device manufacturing in Mexicali, Mexico, high end German automobile manufacturing in Eastern Europe, I would caution the factors that drive design, production and assembly are far more than just location or culture.
I still believe that the US can achieve the highest levels of design and build humanly possible. We build anything, but only if we desire or find the need to do so.
It simply feels good to say "Swiss made," "German engineering," "Made in the USA," but to imply a unique skill by culture or region is about a century or two behind current global reality.
Keep the Dyn’s; (I love my Contour’s) return them only if their sound doesn’t meet your expectations. Pour yourself some Jamaican Rum or Kentucky Bourbon and let your ears decide on the sound performance.