Applicable Models

This information is for the following models:
  • PHA-1A

About this download

This driver is necessary for “PHA-1A”  when you connect to a Windows PC.

Operating System

  • Windows 11 Home / Windows 11 Pro
  • Windows 10 Home / Windows 10 Pro
  • Windows 8.1 / Windows 8.1 Pro
  • Windows 8 / Windows 8 Pro
  • Windows 7 (32 bit/64 bit)
    - Starter(with Service Pack1 or later)
    - Home Basic(with Service Pack1 or later)
    - Home Premium(with Service Pack1 or later)
    - Professional(with Service Pack1 or later)
    - Ultimate(with Service Pack1 or later)
  • Windows Vista (SP2, 32 bit/64 bit)
    - Home Basic(with Service Pack2 or later)
    - Home Premium(with Service Pack2 or later )
    - Business(with Service Pack2 or later)
    - Ultimate(with Service Pack2 or later)

System Storage:100 MB or more of available space


  • Above OS must be factory installed on your PC.
  • Operation cannot be guaranteed if the PC has been upgraded.
  • Please login as an administrator.

File Info

File Name

  • Driver_v8.1.14.exe

File Version

  • 8.1.14

File Size

  • 20.2MB

Release Date

  • 2015-11-10

System Requirements

  • Windows 11
  • Windows 10
  • Windows 7
  • Windows 8
  • Windows 8 32bit
  • Windows 8 64bit
  • Windows Vista



Please download the file with the following steps.

  1. Read the Software Download License Agreement and, if you agree, click "Accept Agreement".
  2. The downloading of the driver begins. When a File Save dialog box appears, please appoint the folder which you want to download.
  3. The driver file Driver_v8.1.14.exe will be downloaded into the previous folder.

After downloading the driver, install the driver as the following procedure.

Note: During the installation of this file, be sure that you are logged in as the Administrator. See the manual of PC how to log on as the Administrator.

  1. Don’t connect the PHA-1A to the PC before installing the driver.
  2. Save all works and close all other programs.
  3. Double click Driver_v8.1.14.exe that is downloaded.
  4. Follow the instructions on the installer screens to install.
  5. Sony Headphone Amplifier PHA-1A will be recognized by the PC after installing.