No. Is the simple answer..it would be much easier to get an Fiber to RCA and run another amp. More wires but much much less headache. Im thinking the same thing. But I wouldn't dare try to push it with the Factory AMP.1 12" I know the stock amp wont push it even close to full power but as long as it give me something. Ive done it i a few other cars but the wires in this BMW has me ????