TC-Helicon VoiceLive 3 Reference Manual page 13

Introduction
This monitoring capability can literally eliminate
the need for expensive belt packs, transmitters,
secondary mixers and other gear required for a
custom IEM solution. Using our included Guitar/
Headphone cable, you only use one cable to
connect your guitar and headphones/IEM's to
the unit!
VoiceLive 3 – Reference manual (2014-03-29) 11