Can you describe what it does? I had no problems with 2.0 Final in my A6 with Bose. I just hacked into the Bose wiring, and am not using any other amps/speakers yet, so my setup may be very close to yours. There are others here with the same setup as well.
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-Michael

#040103696 on a shelf
Mk2a - 90 GB - Red - Illuminated buttons