In the first few hours I was not so excited because my Sony receiver 865 fine disintegrated from Walkman MWZ. Next day I have to iBasso 50 the Burn (Disk Power) draufgeladen in CD in FLAC and then the RAH Listener with an increased volume CD abgespielt.Das result was highly gratifying the RHA had a very highly detailed resolution in the strings in classical music and also the pool with audiophile Aufnahnen example. 2L Referenc recording FLAC 24-bit 96K played on iBasso 50. In Bass the RAH is very good and also ewas stronger than the Sony to my mind .The bass can be very well adapted to the mitgeliferten Öhrstöpseln the large number of Öhrstöpsel is vorbildlich.Auch the handset cord is a super design. I have some Inohrhörer but the RAH MA 750 is the best. The value for money is the io is worth the money. This handset does not need to shy away from any comparison with more expensive brands, but as mentioned at the outset, the Burn in CD u. Adjustment with the Öhrstöpseln brings right out much.