May I suggest the Melokin DA9.1 DAC+head amp?
http://www.qlshifi.com/en/wzcapi/da9.1.htm
It uses the ES9038PRO DAC, instead of the stripped-down Q2M version used in the Topping products (DX7s, D50). It would be nice to see whether the full 9038 chip (which cost signficantly more and uses much...