Hi, I've just installed an aftermarket headunit to my 2002 S3. It had the fully amplified BOSE system which I've bypassed by getting a converter from the back of my stereo so the speakers simply run directly from the ISO connectors which seems to work fine, but even when the volume on the stereo is on '1', it's fairly loud. The sound will still have to come through the factory fitted BOSE amplifier but is there any way of adjusting the output level on it? Also, where is it? Thanks in advance, James.