Applicable Models

IMPORTANT: This file is only for use with the models identified. Not all models are sold in all countries.

This information is for the following models:

  • PHA-1A

About this download

Benefits and improvements

This utility installs the Portable Headphone Amplifier driver. This driver is necessary to connect to a Windows® computer.

System Requirements

Operating Systems

  • Windows Vista®
  • Windows Vista® 64-bit
  • Windows® 10
  • Windows® 10 64-bit
  • Windows® 7
  • Windows® 7 64-bit
  • Windows® 8
  • Windows® 8 64-bit
  • Windows® 8.1
  • Windows® 8.1 64-bit

File Info

File Name

  • Driver_v8.1.14.exe

File Version

  • 8.1.14

File Size

  • 24.05 MB

Release Date

  • 11-09-2015

Before You Start


Important Notes

  • IMPORTANT: Please do not connect the Portable Headphone Amplifier to the computer until instructed. If you have already connected the device to the computer, please disconnect it now.
  • During the installation of this file, be sure that you are logged in as the Administrator or as a user with Administrative rights.
  • To ensure that no other program interferes with the installation, save all work and close all other programs. The Taskbar should be clear of applications before proceeding.
  • It is highly recommended that you print out these instructions for use as a reference during the installation process.

Download & Install


System Requirements

This software requires a computer meeting the following system requirements:
Note: This software is not supported on computers with upgraded operating systems.

  • One of the following Microsoft® Windows® operating systems:
    • Windows 10 Home / Windows 10 Pro
    • Windows 8.1 / 8 .1 Pro
    • Windows 8 / 8 Pro
    • Windows 7 (Service Pack 1 or later)
    • Windows Vista® (Service Pack 2 or later)
  • Hard Drive Space: 100 MB or more
  • Note: This software is not guaranteed to work for all computers even if they meet the above system requirements.

Download and Installation Instructions

  1. Click the Download Now icon on this page to begin.
  2. Read the Software Download License Agreement, then, if you agree, click ACCEPT AGREEMENT to continue.
  3. When the File Save dialog box appears, download the Driver_v8.1.14.exe file to your desired location (please note this location for reference) on your computer.
  4. Note: Please do not connect the Portable Headphone Amplifier to the computer until instructed. If you have already connected the device to the computer, please disconnect it now.

  5. Go to the directory where the file was downloaded and double-click the Driver_v8.1.14.exe file.
  6. At the User Account Control screen, click Yes or Continue.
  7. At the Welcome to the InstallShield Wizard for Sony Headphone Amplifier (PHA-1A) screen, click Next.

  8. Next
  9. At the Ready to Install the Program screen, click Install.

  10. Install
  11. At the pop-up message, please connect the Sony Headphone Amplifier device to the computer using the USB cable and ensure it is powered on.

  12. USB Connection
  13. Once the unit is connected and powered on, then click OK.

  14. OK
  15. At the Setup Status screen, please wait while the driver installs.
  16. At the InstallShield Wizard Complete screen, click Finish.

  17. Finish

The Portable Headphone Amplifier Driver installation is complete.