The decision to produce in the USA, or in China, is one that many manufacturers have had to make. If we made our stuff in China (or, like many, simply did "final assembly" in the US from Chinese metal and boards) we'd be able to offer fancier chassis, and/or more features. That's a judgement call.
Though I am thrilled to see many more products being made (or at least assembled) here, since, as far as I know, we were the the rebirth of inexpensive US manufacturing in 2010.
And thanks for building all your gear here. It's great to buy quality home audio products that are built in the USA. It's also one of the major reasons I'm a fan of Grado headphones and Ohm Acoustics speakers.
On the pro-audio side, my bass pre-amp is US designed and built (old Eden gear), and my basses are built in the US as well (Carvin). I'm proud to say that over half of the gear I own is designed and built here.