A couple of questions:
1) How much? (i.e what is the asking price of the DAC?? It's never stated, only the cable price is.)
2) the math in your first paragraph is confusing. You mention $7800 total list price w/options, but then mention adding a $2K mod. Don't you mean $7800 total AFTER the mod (i.e $5K plus $400 plus $400 is only $5800 stock w/options, not $7800)