IBasso Audio - DX300MAX Firmware update. This is OTA.... | Facebook
1. Rectified the bug that there is some background noise when playing MQA via Tidal.
2. Improved Bluetooth compatibility.
3. Improved USB digital output compatibility
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iBasso DX300 MAX Dual AK4499 Snapdragon 660 Octa-Core 6GB RAM 128GB ROM | Page 112 | Headphone Reviews and Discussion - Head-Fi.org