Phoenix Audio Technologies DUET VCA - Manual (Page 5)

3. Key Features
- By default, the Duet utilizes its internal microphone and loudspeaker providing high quality,
headset-free hands-free communication.
- The Duet has a 3.5mm stereo jack for external loudspeakers or headphones. Connecting
your loudspeakers to the Duet will automatically disable the internal loudspeaker
- The Duet is powered through the USB port and does not need an additional power supply.
- 5 – Phoenix Audio Technologies www.phnxaudio.com