Asus ROG Xonar Phoebus Quick Start Manual page 12

5.1.2 Connecting Phoebus Box with external headphone and
microphone
Headphone Out
Mic In
No Item
1 Headphone Port
2 Microphone Input Port
2
1
2
Description
Connect headphone to headphone port on Phoebus
Control box
Connect microphone's 3.5mm plug to Phoebus
Control Box Mic-In port.
ASUS Xonar Phoebus