sethro1980

I am preparing to have two amplifiers installed in my GLK; one for a subwoofer and one for the front door speakers. I didn't think there was an amplifier in my GLK because I have Audio 20, but an installation shop told me that there is one, and due to fiber optic connections I would have a difficult time installing amps. Is this true? There IS that weird box that has wires running to it in the spare tire well that I asked about in a separate thread that no one commented on that I think might be an amp. I want to be sure before I plunk down money for parts and have a custom shallow box built to rest on top of the spare. Please help!