The Marantz HD-DAC1 is a stylish compact DAC and headphone amp that comes with USB and analog 3.5mm in. Though it does not have the best specs when it comes to audio decoding capabilities, it's a great sounding device.
The Aimpire AD10 is essentially the same format as the Topping D10, but with worse performance. Most regard this DAC as a knockoff of the real Topping D10.
24 bit / 192 kHz
Cirrus Logic CS4398
Audio Science Review