Those XDuoo are absolutely more than enough, I remember running LCD-2 off a dongle just fine.

Edit: MQA are basically the same as those "high-res" gimmicks, and DAC chip have no correlation with the sound output whatsoever. What matter is its implementation, and if it's implemented correctly, it will produce sound without clipping or distortion. It won't increase detail or soundstage or anything like that.