Hellllooooo,

This is not A3 specific, but please bear with me because the telematics forum is locked and the A3 seems like a reasonable proxy for the S5 in this case.

Has anyone replaced their stock amplifier with OEM source in an MMI-equipped MOST fiber-optic cable-using A3? Is it a simple plug & play and was the audio out a pre-amp digital signal? I don't care if it's Bose or Non-Bose (might actually be better if it's non-Bose).

I'm trying to figure out how one goes about upgrading just the amplifier and speakers in newer MMI-equipped Audi's to keep the OEM look. Is it possible?

Thank you for any help!!