A customer is bringing in this car and is complaining of the following.
- Rear drivers side speaker has noise when radio is off.
- Front passenger side speaker same.

Everything is stock with the premium sound system. He has already replaced the headunit with a new one he got from a company in the states. The factory amp is a pioneer, not sure what the specs. are, probably not to much.
I suspect the amp as he already had the deck replaced and he gets static with the deck off.

Here's my question, as I have'nt done this before, can I replace the amp with another one using the high level inputs, will this work. I've never tried it but I think it should. Any input would be great. Btw he wants to keep the factory deck.