Crystal Semiconductor Crystal SoundFusion(tm) Virtual MPU-401 Driver Download

Crystal Semiconductor Drivers

The Crystal SoundFusion(tm) Virtual MPU-401 is an audio device manufactured by Crystal Semiconductor. This driver fixes problems with no sound or static or distorted sound, and can unlock advanced features of your audio device. This version of "" has been downloaded 1,834 times with a user rating of 4 out of 5 stars, based on 20 reviews. It is compatible with PCs running Windows XP, among other operating systems. The total disk space used for this update is 1.1 MB.

20 Ratings (see all reviews)

Supported Models

Crystal SoundFusion(tm) PCI Audio Accelerator

Crystal SoundFusion(tm) Game Device

Crystal SoundFusion(tm) Joystick

Crystal SoundFusion(tm) Virtual MPU-401


Crystal Semiconductor

Supported Operating Systems

Windows 2003, Windows XP, Windows 2000, Windows NT4, Windows NT3.51, Windows ME, Windows 98SE, Windows 98, Windows 95, Windows 3.1

File Name

Uploaded By

DriverGuide (DG Staff Member) on 9-Sep-2003

Ratings & Reviews

See all Crystal Semiconductor Crystal SoundFusion(tm) Virtual MPU-401 ratings and reviews

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
AUDIO/Crystal CS4280/WIN95&WIN98/CWCDATAC.OS_ 411 bytes 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCSPUD3.VX_ 10.9 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCDSND.VX_ 31.4 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCSPAT.OS_ 481 bytes 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCECHO.VX_ 6.0 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCAUDIO.INS 27.3 KB 22 Apr 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCLANG.DLL 12.3 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCWTDOS.OS_ 19.5 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCOPROC.VX_ 15.0 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCPCPCI.OS_ 19.8 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCSPKPH.OS_ 3.2 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCHRTF.V4_ 210.6 KB 16 Jun 1997
AUDIO/Crystal CS4280/WIN95&WIN98/CWCSBPRO.VX_ 21.4 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCWT.OS_ 3.6 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCDGAME.OS_ 19.6 KB 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCHRTF.44_ 189.8 KB 16 Jun 1997
AUDIO/Crystal CS4280/WIN95&WIN98/CWCSPUD.DA_ 11.9 KB 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/SETUP.EXE 96.3 KB 19 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCEQ.OS_ 645 bytes 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCFM.DR_ 10.5 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWC3D.OS_ 1.7 KB 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCENUM.VX_ 3.4 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCSPUD.VX_ 85.7 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCHRTF.22_ 123.1 KB 16 Jun 1997
AUDIO/Crystal CS4280/WIN95&WIN98/CWCHRTF.V2_ 128.7 KB 16 Jun 1997
AUDIO/Crystal CS4280/WIN95&WIN98/CWCASYNC.OS_ 1.8 KB 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCFM.OS_ 4.3 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/FUSV2871.CAT 3 bytes 7 Aug 1998
AUDIO/Crystal CS4280/WIN95&WIN98/CWCIOTRP.OS_ 7.9 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCPASS.VX_ 20.9 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCMMSYS.DR_ 55.0 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCDOS.EX_ 35.2 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWGMSG.VX_ 3.4 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCPROPS.CP_ 25.0 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCDDMA.OS_ 19.4 KB 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCAUDIO.INF 27.0 KB 22 Apr 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCMMSYS.VX_ 49.1 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWC4610.OS_ 5.2 KB 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCPROXY.VX_ 1.4 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCSBFG.OS_ 1.8 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWC4612.OS_ 2.8 KB 17 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCJOY.VX_ 2.6 KB 18 Feb 1999
AUDIO/Crystal CS4280/WIN95&WIN98/CWCZHFM.OS_ 927 bytes 18 Feb 1999

How to Update Crystal SoundFusion(tm) Virtual MPU-401 Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the Crystal SoundFusion(tm) Virtual MPU-401 driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Crystal Semiconductor Crystal SoundFusion(tm) Virtual MPU-401 into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Crystal Semiconductor Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

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