Well i cant seem to find any spec on the headphone out. If it can play out my Arya with "ease" I am getting closer
https://www.weiss.ch/products/dac501-dac502
Normally I see watt output but the ones I see are very low.
Headphone Output:
(1) stereo 1/4-inch jack connector, DC coupled. The output level is selectable via the LCD menu; four level settings are provided as shown below:
Headphone output with a 0 dBFS sine wave input:
0 dB setting: 6.8 Vrms +18.9 dBu
-10 dB setting:
2.2 Vrms +8.9 dBu
-20 dB setting: 0.68 Vrms -1.1 dBu
-30 dB setting: 0.22 Vrms -11.1 dBu

These levels are achieved with a 0.0 dB setting for the level control on the LCD screen.
Suggested headphone impedances:
0 dB setting: 200 Ω or higher
-10 dB setting: 30 Ω or higher
-20 dB setting: 10 Ω or higher
-30 dB setting: 4 Ω or higher
The same parameters apply to the 4 pin headphone output of the DAC502 as well.