c media usb audio device still has some distortion

When the device-specific driver replaces the default driver, the device interface that is created by usbaudio2.sys is still used because the reference strings overlap. However, both drivers use the 'wave' reference string when the device interface is registered. This 'audio not playing' problem occurs because the default USB audio 2.0 driver (usbaudio2.sys) uses the WaveRT port for operation but the device-specific driver does not. Both the Windows Audio and the Windows Audio End Point Builder services must be running for audio to work correctly. When you select the icon, you receive the following message:Īudio services not responding.

The speaker icon on the task bar is marked with an X mark. In this scenario, the device cannot be used, and the computer does not have sound.

The downloaded device driver replaces the usbaudio2.sys driver.

Windows then downloads the device-specific driver from Windows Update.

The operating system detects the device and loads the standard USB audio 2.0 driver (usbaudio2.sys).

You connect a Universal Serial Bus (USB) audio device, such as an audio adapter or USB digital-to-analog converter (DAC), to a Windows 10 Version 1703-based computer for the first time.Judging from what other people said, it is a common problem with Valab and Gigalabs Moon Dacs. If you hear it distorted (sounds like the amp is clipping, as if you were playing it too loud) - you've got the same problem. Then, go to control panel -> sounds and audio devices -> sounds -> select a window sound, for example Asterisk an press play (you can try that with a couple of different sounds that you see in the list). Put your amp volume a bit higher, so that you can hear clearly. Put the volume in XP to 100% (using the little speaker near the clock in the task bar). If you have an XP, there is a simple method to test your DAC. It's not Vista issue, it's there even when using a CD player as a source. This should give a definative answer to this distortion issue.

I have a CRO so will make some test tones and then observe the output of the DAC on screen. I so far haven't heard any distortion from this dac, could it be a Vista issue?

Im using Windows XP and so dont have the test tone available in the control panel Originally Posted by erin /img/forum/go_quote.gif

C media usb audio device still has some distortion