Drivers · Audio · Streaming

Virtual Audio Driver

Add a virtual speaker and virtual microphone to your Windows device.

WindowsWindows Free

Windows 11 Sound settings for the virtual Speakers (Virtual Audio Driver by MTT): provider MikeTheTech, driver date 1/2/2025, 32 bit, 48,000 Hz, with Windows Sonic for Headphones as spatial sound.

Overview

Virtual Audio Driver adds two devices to Windows 10 and 11: a virtual speaker and a virtual microphone. Windows sees them as ordinary sound hardware, which helps on headless machines, in remote desktop and game-streaming setups, and when you need to test audio software without plugging anything in.

The speaker accepts formats from 8-bit, 8,000 Hz up to 32-bit, 192,000 Hz and works with Windows Sonic spatial sound. The microphone offers 16-, 24- and 32-bit formats up to 192 kHz and works with Windows audio enhancements such as Voice Focus. Apps can take exclusive control of either device, and the speaker follows the Windows volume mixer per app.

It is built with the Windows Driver Kit on Microsoft's Sysvad audio sample, and release 25.7.14 is code-signed through SignPath. The driver is free and open source under the MIT licence, and Virtual Driver Control can install and enable it alongside the Virtual Display Driver.

Highlights

A virtual speaker (playback) and a virtual microphone (recording) device
Speaker formats from 8-bit, 8,000 Hz up to 32-bit, 192,000 Hz
Microphone formats: 16-bit 44.1/48 kHz, 24-bit 96/192 kHz, 32-bit 48 kHz
Windows Sonic spatial sound on the virtual speaker
Microphone works with Windows enhancements such as Voice Focus
Exclusive mode, application priority and per-app volume
Windows 10 (1903+) and Windows 11; x64 tested, ARM64 listed
Signed release (25.7.14) via SignPath; installable from Virtual Driver Control

Virtual Audio Driver development journal

All 4 entries

Live4 entries so farUpdated Oct 20, 2026New (4 entries updated in the last 14 days)

Details

Platforms: Windows
Version: v25.7.14
First released: 25.1.2 (January 2025)
Last commit: Mar 2026
GitHub stars: 422 (as of Oct 2026)
Built with: C++ and C, Windows Driver Kit (Sysvad sample)
Download size: 49.8 KB (signed 25.7.14 zip)
Credits: Built on Microsoft's Windows Driver Samples (Sysvad)
License: MIT (Microsoft sample code: MS-PL)
Status: Available
Requirements: Windows 10 build 1903 or later, or Windows 11. x64 tested; ARM64 listed. Only test-signed builds need test signing.

Questions

Where do the new devices show up?

In Device Manager, 'Virtual Audio Driver' (speaker) appears under Sound, video and game controllers and 'Virtual Mic Driver' (microphone) under Audio inputs and outputs. In Sound Settings, pick them under Output and Input.

Do I need to enable test signing?

Only for test-signed builds. The README still carries a beta warning about test signing, but notes that a production-signed driver can skip it; release 25.7.14 is labelled Signed (SignPath).

How do I install it by hand?

In Device Manager choose Action > Add legacy hardware, pick the hardware from a list, choose Sound, video and game controllers, click Have Disk and select VirtualAudioDriver.inf.

Can I change the sample rate?

Yes. In the speaker's Properties > Advanced tab choose any format from 8-bit, 8000 Hz up to 32-bit, 192000 Hz.