Had tried this Aune several time since last month. Definitely a great addition in today's 300 bucks headphones. Overall balance tonality with airy, clean sparkle treble, natural and "open" midrange, with tight bass. Female voice and string sound sublime, sweet, smooth, lot of detail inside. Airiness help the soundstage become spacious but not overdone in any way (overall presentation still cohesive).
My long time favourite in this price range is Hifiman Sundara. In comparison, Sundara has a bit darker and less airy presentation than AR5000, with wider soundstage and a bit thicker male voice. Aune is more lively, Sundara is a bit more relax. Both headphones use different type of drivers, and I think complement each other well.