The signal is routed through the stock B&O amp before it makes it's way to the Audison. That way, the car doesn't register a difference in the hardware, and won't start throwing error messages.
As the install was done by a technician, I wouldn't be able to tell you what connections were used...
Pretty sure it's my car you're referring to.. :)
Got the upgrade done early july, after being massively disappointed by the B&O sound system.
The Audison amp/DSP was installed along with a new run of cable from the 12V battery as well as new, high quality speaker cables. The DSP was tuned by a...