S3 8l aftermarket HU

S3Powerxz

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Hello.

I have S3 8l with BOSE.

The car came with RNS-D, but i sold itnand bought pioneer double din HU.

I bought PC9-410 and 2 GLI's

The problem is that there is a lot of whine coming from the speakers.
It starts when i turn the key in accessory position and when i start the engine it gets even worse. The whine is increasing with RPM increasing.

Any solutions?
 

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