Question for anyone who has added the Match Up 7DSP to a base (no amplifier) system - does the wiring harness plug into the quadlock on the back of the head unit? If so, will me having installed an MMI box (that also plugs into it and re-directs the optical cable etc.) affect this? Would hate to buy a plug and play amp only to find I then have to choose between MMI/Android Auto and an amplifier...
cheers
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