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I wanted to use this as an interface so I can play guitar and listen to Spotify at the same time, but it will not allow me to do that. You must connect headphones directly into Jam device, which will allow you to play and listen to yourself but no other music streaming to play along with. I retuned the device.
Tried using this on two iOS 14 devices running garage band. Neither worked at all. The unit lights up blue when you first plug it into the Lightning port, but then shuts off when you launch garage band. Never got the green light the manual says to expect when you launch a recording software! 👎