usb 24/192 dac under 1500.

There's a lot more to it than that. The specs you list are not the only things you need to look at. I would suggest that you listen to some dacs so you can get an idea as to what I'm talking about.

With DACs, you can't just compare chips. The implementation of the chip is more important than the chip itself.

Two DACs based on the same chip can, and often do, have completely different sounds.

Not only that, the analog stage is very important. A lot of people overlook that, as well.