Here's my impression on the Sony XBA-Z5.   I own currently Sony MDR-EX1000, XBA-Z5, PHA-3, MUC-M20BL1 balanced cable and also Sennheiser HD800 and Audio Technica W1000X for reference.   I'm very surprised or almost horrified how most people here seem to use XBA-Z5 connected to mobile phone. Let me tell you that I dislike the sound when connected to Samsung S5 or Tab S. The bass is too overpowering and somewhat muddy. Not sure if this is because DAC or poor...