Quote:
Originally Posted by Technic
The (2) amps in the HK system cannot be replaced, only add aftermarket amps in series.
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Quick follow up. I would need to purchase two of these to install in series with the 2 OEM amps?
Match by Audiotec Fischer UP 10DSP & PP BMW 1.9RAM-HK fits Harmon Kardon BMW 19+
Clearly, i'll have an audio shop perform the install. My M3 should arrive at dealer within 2 weeks.