So I currently have the Schiit Heresy and the Schiit Modi 3, and that worked until all of a sudden the left channel in whatever headphone I plugged into the Heresy wouldn't work (I think it may have been a static electricity issue). I troubleshot the headphones, DAC, audio source, cables, etc., but clearly, the problem was the Heresy. Because of this, I plan on returning the Heresy and use a Drop gift card I got for Christmas on the THX 789 to run with my Modi 3 single-ended.
I am wondering if it is worth spending the money on a balance DAC to pair with the THX 789. I currently own the 6xx and the Sundara. I have read that balanced will provide incredible sound quality for both of these headphones, but is it worth it to spend the $300+ on a balanced DAC plus cables that a setup like this will require?