Donny, there is no line in on this model, but I believe there is on the more expensive ones. DonM, I think because the room has a huge amount of natural reverb, this accounts for the distortion to some degree. In the first vid I did, the camera was much closer to the sound source. Had I moved the camera close to the Bose, I think the audio would have been much cleaner.
Gary

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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)