BSW Stage I Audio Upgrade Review?
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02-04-2012, 02:16 PM
Join Date: Sep 2010
The bsw stage i is a speaker upgrade. Nothing more. If you want to upgrade the base system you have more work to do. One of The cheapest would be the oem alpine upgrade
My warranty replacement BMW professional radio
for HiFi or Stereo (non-MOST) (I upgraded to one with BT & USB).
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