[gsxf1100]

Hi.
2004 v70

I exchanged the factory stereo with an double din aftermarket touchscreen stereo due to having a sat nav integrated.

I finally have the right loom adapter to get it working.

But, the speakers sounding like the drown and overpower.
The stereo has his own amp and subwoofer.

Guess the factory amp don't like the stereo, as everything seems to sound good when plugging the original stereo back in.

Is there a bypass loom for the factory amp available?
I tried to remove the amp fuse to disable the factory amp but that only stops the speakers from working altogether.