[dggopal]

I own the Shure SRH-840's and use them to watch movies mostly sometimes music firmly in the electronica genre. I value clarity and want to open up the soundstage.
 
My budget is $200 or less
 
Having said that I would like to know what USB (headphone jack broken) DAC and AMP option would be the best?

 

[ProtegeManiac]

Ibasso D-Zero Mk2. There's also the Pangea HP101 but the drivers on mine only work with dedicated music players, and not with streaming audio in my browsers in case that's important to you; similarly, there's the Aune T1.