Many thanks Morph for going to such lengths with the explanation.The Technics Kn2400 is an economy version of the KN7000.Being stereo it has 2 line outs L - R The Keyboard has its own speakers and the rating is given at 36W (18 x 2)and thats the full extent of the technical specifications they supply.I am trying to get good sound quality at all levels so will watch ebay for a Alesis RA300.Once again my gratefull thanks .Jim