CAD Audio U2 Owner's manual

U2 USB Stereo Headphones 

with Microphone

Before using the U2 in your favorite audio or communications 

application you must confi rm that the computer’s operating 

system recognizes the U2.

Windows XP recognition instructions

1.  Plug the U2 into the USB port on the computer.

(When using a USB hub, check with the hub manufacturer to 

be sure the hub supports a device such as a microphone. Plug

the microphone directly into the computer’s powered USB 

port for optimal performance.)

2.  Allow 30 to 60 seconds for the system software to recognize 

the U2. (A series of bubbles will appear by the Windows 

toolbar to notify you of a new device.)

3.  In the Start Menu, select Control Panel.

4.  Select “Sounds, Speech, and Audio Devices”.

5.  Select “Sounds and Audio Devices”.

6.  Select the “Audio” tab. Confi rm that under the “Sound 

playback” and “Sound recording” sections the “C-Media USB 

Headphone Set” is selected. 

7.  Select the “Volume” tab under the Sound recording heading 

and select “Advanced Controls” in the Options menu of this 

 window.

8.  Click the “Advanced” button to open the “Advanced Controls 

for Wave In” window. Depending upon your system, you 

might have the option of selecting “1 AGC” or “Mic boost”. 

Checking this option will signifi cantly increase the sensitivity 

of the microphone. Use this for recording softer sounds. If you 

experience distortion when recording louder sounds, try 

unchecking this option.

C-Media USB Headphone Set

C-Media USB Headphone Set