Applicable Models

This information is for the following models:
  • TA-ZH1ES

About this download

This page provides instructions on how to update the firmware for Headphone Amplifier TA-ZH1ES to version 1.03.

Benefits of Update:

  • Improve the symptom where the device cannot be reconnected after changing input on macOS10.12.
  • Improve the symptom which misidentifies 32bit/384kHz source as 24bit/384kHz.

About Download:

  • Download the file to your computer.
  • Make sure that downloaded file size is correct.
  • Extract the update file.
  • Double click on the update file.

Note: Depending on the OS environment you are using, it may be decompressed simultaneously after downloading, or it may not be decompressed as described above. In this case, please use a decompression tool.

Target PC environments


  • OS X v10.7 – 10.11
  • macOS10.12

How to check Firmware Version

  1. Connect the USB-B port of main unit to your computer.
    Turn on the main unit and set the input to PC(USB-B).

  2. Execute the downloaded update program.

  3. Click the Connect after execution of update program.

  4. The following screen will appear after connection to main unit.
    You can check the current software version.

File Info

File Name

  • Sony Headphone Amplifier Updater(Mac)

File Version

  • 1.0.3

File Size

  • 1.06MB

Release Date

  • 2017-03-21

System Requirements

  • OS X
  • macOS Sierra



How to Update


  • Once updated, you can not go back to the previous software version.
  • Stop any music play before doing the firmware update.

Do not do the following while updating.

  • Turn off the device.
  • Disconnect the USB cable which connects the main unit to your computer.
  • Operate with the main unit and remote control.
  • Click Disconnect.
  1. Click Update.

    When the update starts, the following screen will appear.

  2. When the update is completed, the following screen will appear.
    Click the Exit.

  3. Disconnect the AC power cord of main unit.

  4. Check the software has been updated to the latest version.
  • If Disconnect is clicked during the update or if updating stops halfway, please restart from
    How to check Firmware Version and try reinstalling the firmware.