With the GO:MIXER you have a total of five inputs for guitar/bass, microphone, and a stereo keyboard plus two stereo 1/8-inch jacks for line-level devices such as music players (for a backing track) or drum machines.

There are level controls for the guitar/bass, mic, and L/R keyboard inputs so you can do a polished mix of the sound going into your phone. An audio mixer would not be complete without a stereo analog monitor output and GO:MIXER includes a stereo TRS jack for listening on headphones or driving an external powered monitor speaker system.

GO:MIXER is powered by the connected smartphone (USB jack) so no batteries are required. I think if you're doing a lot of Facebook Live or YouTube videos you should have this device!