You don't mention that you have a preamp. If you don't, for a reasonable priced DAC/preamp with volume control,I would recommend the Emotiva XDA-3 for $699. They do have 10% off your first order. If you want to save some money, a used Emotiva XDA-2 or Emotiva Stealth DC-1 are reasonable choices for about $250 to $300. There is a Stealth currently listed on Audiogon.
For a reasonable priced basic streamer, I would recommend the WiiM Mini for $99 or the WiiM Pro for $149 on Amazon.