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      09-12-2012, 02:08 AM   #7
Brigadier General

Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

Posts: 4,291
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Hi Fi head unit output is 5 volt differential

It's not considered a high level signal . It feeds the High Fi amp .
A lot of the guys that use the ms-8 reprogram there L7 Head Units
for Hi Fi output and use it that way.