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      10-22-2020, 11:44 AM   #1353
PACarGuy
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Drives: 2012 E92 M3 DCT ZCP
Join Date: Nov 2015
Location: Philly burbs, PA

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Quote:
Originally Posted by cannyjock View Post
It's a buzzing sound, typical electrical interference noise.

The one I got has a built in battery, it works OK on battery only just not when plugged in to USB. I couldn't find a USB powered one for a decent price that didn't have a battery. To be fair a lot of these type on Amazon say not to use it plugged in.

Here's the one I got:

https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1
Does this improve bass signal at all?
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2012 E92 M3 | ZCP | DCT | Space Grey Metallic | Black Novillo | BE Bearings | CF Rear Spoiler, Diffuser, Front Splitters | Black grill + side gills | DTEC 160W Angel Eyes