What does the DUPLEX button stand for?
The DUPLEX button has 2 modes: ON and OFF. When the Duplex is ON, you can hear your changed voice output. When Duplex button is OFF, your changed voice is muted. However, if you are doing voice chatting or making Internet phone, rest assured that the person at the other end will always hear your morphed voice whether the Duplex button is turned on or off. Note: The Duplex button will be OFF by default whenenver you use VCS with an audio player such as Windows Media Player, Winamp, RealOne, etc.
