My VoiceLive 3 came with a "Headphone Guitar Cable" that I've never seen before. How does it work?
The "Headphone/Guitar Cable" carries signals from both your guitar and stereo headphones all in one little package.
Simply connect the 1/8" male headphone jack and 1/"4 male guitar jack to VoiceLive 3's headphone out and guitar IN.
Then, plug your guitar into the other end of the 1/4" cable and right next to it you'll have a convenient place to plug in your headphones. It saves a lot of space and allows you to have a completely independent headphone mix without the complication of an In Ear Monitor system.