I,ve got a Rav4 with original JBL unit. With Dasaita There is a background annoying sound even when there's no music or sound. I've read it's because of the amp, that I'd have to use a different hardness for connection to the car. It's that correct? How can I eliminate that noise? Also radio volume is too loud. Even at level 1 is high, and 3 is extra loud!! Changing factory settings volume doesn't make a change.
