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I just bought a 2014 Volvo 780. The stock radio has Bluetooth and also has steering wheel controls. Is there a way to use this radio to add the ability to run amps. If not. I do have a ken wood head unit that i had in my old rig and was running 3 amp
February 6th, 2014
You can add an amp to any radio with the use of a preamp adaptor.  This device hooks to (in your case) to rear left and right speakers outputs to reduce the output to a preamp level which is the correct input source for an amp.  The you can connect RCAs to RCAs. The adaptor can be bought at most stereo shops like Best Buy.  Ask for a Preamp Adaptor.