Can someone advise me on an Audio auto leveller controller, I can buy to adapt to a 200 watt amplifier. I play some home made DVD Music Videos and the sound variation spoils the performance. I see there is some software available but as I have already made my cd and DVD discs, I just need a controller that I can use to try and equalise the audio output.The power source is 230 v. I am quite happy to pay for a piece of equipment that will do the job. Thank you for any advice. I use MP3 and MP4 format.