it slightly increases when i accel, but not always. it sounds like the whines coming through the speakers but its loudest when the trunk is open so thats why i assumed the amp. it is a pioneer head unit 70.99 special. i seperated the rcas from the power when i tried a new set but it only helped the noise a very little. even when the headunit volume is at 00 the whine seems the loudest, as i turn the volume up it seems to slowly go away but still very evident