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      01-10-2021, 07:41 AM   #12
MikeElmendorf
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Drives: 2019 BMW X5/2021 M550
Join Date: Jul 2017
Location: Albany, NY

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Ok, update: The new amp was installed on Wednesday. Since then, I have not experienced the audio dropping/distortion issue that existed before. Yesterday I did a fair amount of driving in an effort to assess whether it was fixed; It previously did not happen on every drive, but generally it would have happened in the amount of driving I have done. So, I am cautiously optimistic the new part does, in fact, correct the problem.

It also seems to me that the system is louder, i.e., I don’t have to have the volume bar as close to max to achieve the desired volume. It always seemed like it needed to be turned up more than on my 2018 540. I have read that the spec for the 2021 reduces the power of the amp from prior levels. Curious if that could have caused the problems many of us have experienced and if the new amp is putting out the prior power level.