Best used DAC under $750.


I am currently using the DAC section of my Mac 2500. Would like to have a separate. Also would like xlr outs. Not looking to buy new or spend more than $500-$750. I appreciate your recommendations from your experience. I have owned several separates in the past. Antelope Gold, Wadia 121, AMR 777, April Music ??
dpm2340
Topping D50. Measures better than just about anything else. If you want transparency, look no further.
A used Benchmark DAC1 HDR would fit in the ~$600 budget and has XLR out. I've had mine for about 10 years, use it as a DAC and preamp and have no complaints.
Three Things to look for:
1. Not over 5 years old
2. A Ladder DAC
3. Tubes
4. Volume control 

Smart to go budget now as these are improving quite quickly.

Keep us posted please. Hurray for #4.