Relationship between Mono/Stereo MP3 and Bluetooth?!? 2018-04-29 13:05:25 I have a technical question relating to an unusual problem I am having, and I thought this would be the best place to ask.I've determined that many of my MP3 files that play fine when listened to via direct headphone connection are playing in a consistently distorted way (a sort of "swishy" sound) when listened to through Bluetooth headphones (BOSE A2), earphones (B&O H5) or speakers (UE Boom 2). The good MP3's always play fine, but the bad ones are always distorted.These "bad" files are encoded with low bitrate, but as I say, sound fine as long as it's not through Bluetooth. Interestingly, of three players I have, these files sound bad on Bluetooth through an AK70 Mark I, an AK70 Mark II, but sound fine on Bluetooth from an AK JR. I looked at all my files in Similarity, and found an obvious differentiating factor. The "bad" ones that won't play well through Bluetooth are all mono, and the ones that are stereo always play fine.This seems strange. How would one account for this? Thanks.I've attached a sample recorded by my iphone of the swishy file playing from an AK70 through a UE Boom2 speaker.