Lol why people are so pissed, imo d30pro has an absolutely absurd pricing without any additional functionalities like BT and mqa, however I feel like 350~ish is a reasonable price range for a30pro. Compared to sh-9 it's less noisy(probably inaudible), tons more power(probably useless), has pass through(pretty decent if headphones alone can't satisfy you), aesthetically superior(silver shell option+asymmetrical holes) and 96dbs of dynamic range into iems(wow CD quality tho impractical). I honestly can't think of a comparable alternative at this price range, a30pro's performance and features totally justifies for itself.