The new Hiby R6 Pro is excellent. Both the balanced n unbalanced jacks function exactly the same only the balanced is amplified with more power but I don't hear different coloration.
I find myself switching from the default tonality to the reference back n forth. The default setting has a tad more mid bass while the reference, less mid bass. The tube sound or warm sound settings I don't care for. It loses the high end sound.
The UI is great and simple to navigate.
The dm6 absolutely sounds great with the Hiby R6 pro in the unbalanced 3.5mm jack with the high gain. Super powerful.
I have never heard "Kashmir" by Led Zeppelin sound sound freaking good.
I can hear every strike of the drum with authority like never before.
"Dreamer" by Hiromi sounds fantastic. There is a bass strike on what sounds like a big drum ( not kick drum) that hits so hard it takes you by surprise. The louder I go the stronger the impact. Guitars, violins, pianos, etc simply sound amazingly clean and with pure dominance.
"Herman's Habit" by the original sound track of La La Land is jaw dropping with it's sub bass line and trumpets. And my absolute favorite " A whiter shade of pale" by Annie Lennox, the bells and schimes are unbelievable!!
The Hiby R6 pro is a freaking brick, it's heavy. Much more havier than my Fiio X7mk2. Both daps sound awesome to my ears. My Sony Walkman ZX2 sounds the least best since it's to passive sounding, in other words, it's like an analog sound which has dips in the 2-4khz which is not due to the dm6 , it's the Sony's house signature. Nothing is boosted with Sony.
Anyhow, a great combo. You ask me to report....
I used NO Eq.