Have you considered trying the use of the low level outputs from the Joying head unit
coax (sub) and phono (R & L) for connection to the subwoofer amp and two channel amp?
I am an audiophile (5.1), not a car audiophile but I believe this would be my preferred connection method.
Last edited by StormWhite; 11-15-2019 at 04:09 AM.
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