FiiO QX13 Portable DAC/Amp (Open Box) usb cables But the HDB 630 achieves

But the HDB 630 achieves this with a closed back

Network Standby (with internal or USB HDD attached): > 15W*

USB charging via USB-C socket

Drives: 3BA Knowles Drivers + 2 BA Kinera Customize Drivers

FiiO QX13 Portable DAC/Amp (Open Box) usb cables But the HDB 630 achievesQX13 Portable DAC and Headphone Amplifier 900mW+900mW desktop level power ESS 8 channel DAC ES9027PRO 6 TI high precision op amps XMOS 16 core XU316 10 band high precision PEQ Fully carbon fiber body 1. 99 inch color display Included magnetic protective leather case High Specs New Chapter All new FIIO QX series Writing a new chapter on high performance audio dongles FIIO QX13 Brings together over a decade of FIIO's technical expertise Combines the Q