I was aware of the scale, I thought he was saying twice as loud (which I interpreted as 3db) was 10 times the power. But you are calling twice as loud 10db (which perceptually sounds about right). So... got it. Depends on the music you listen to and the format if you need outboard amps, glad a new can of worms opened for you, lol. :eek: Stay the course and keep dailing in your system, then we'll give your credit card another ringing....