I Mostly use my Aune s6 pro with my Hifiman HE4xx headphone and my monitors Adam audio tv5's on my desk setup.
It drives my HE4xx with easy on the 1/4innch headphone output put. HE4xx is pretty fast fun to listen to. The highs, mids and low-end are incredibly fast and punchy to me but I miss the energy. Ill get a balanced xlr 4pin cable next week, I am curious it will power my HE4xx a bit better, I do feel it lacks some energy.
With my T5v's its soooo weird.... they are connected via XLR. They sound super controlled, punch and have way more energy to them than I have experienced before with some other dacs I owned.
They are spacious and wide and push the music into the room. I had NAD D-1050 and Arcam rDac. Booth these dac's are certainly not bad. But comparing them to how i like music... they just very far surpassed by the Aune s6 pro.
Do note I am just an average user with so-called taste audiofile for gear. I am absolutely not an expert. This just me telling what I feel and think when am listening to the Aune s6 pro. Am willing to learn more, to better use words wich maybe make more sense.