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Is the Bose system 'half-amped' or 'fully-amped' in B5 RS4?

How can you tell?

Also is the Bose in the B5 RS4 the exact same as the Bose in an B5 S4?

Bose in Audis is ALWAYS fully amplified - front and rear.

AFAIK the Bose system is the same in the B5 A4, S4 and RS4.

Yep defo fully amplified, as I just bought the wiring adapter fro my RS, ad it was the fully amp'd version

Ended up going for the once with the RCA's instead of speaker inputs.