Article ID : 00075832 / Last Modified : 05/28/2015

What is the difference between the USB ports on the front and the rear panel of the USB DAC amplifier?

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Front USB Port (USB-A connector)
NOTE: The Font USB connection cannot be used to charge an Xperia® device or other USB devices. Use the rear USB connection if the device is not detected or will not charge.

  • Playable audio file format: PCM (Sampling frequency: 44.1 kHz/48 kHz, data bit length: 16 bit)
  • Charging of mobile devices: Yes
  • Hi-Res Audio Playback: No
  • Supports Walkman® players, compatible Android® devices and Apple® iPod®/iPhone® mobile devices.

Rear USB Port (USB-B connector)

  • PCM (Sampling frequency: 44.1 kHz/48 kHz/88.2 kHz/96 kHz/176.4 kHz/192 kHz, data bit length: 16 bit/24 bit/32 bit) DSD (2.8 MHz/5.6 MHz)
  • Charging of mobile devices: No
  • Hi-Res Audio Playback: Yes
  • Supports compatible Android devices, Windows® computers and Apple® Macintosh® computers.


    • A designated Windows driver is needed to playback Hi-Res audio files.
    • DSD files can be played on an Apple Macintosh computers when using the Hi-Res Audio Player software version 1.1.0 or later.