Conaan9, presuming your question was addressed to me, I just use a receiver. The point of the ML hybrids is to have higher standard speaker (over the box speakers but under the electrostatic) that you don't need expensive equipment to power. I believe the hybrid line (Montage, Mosaic and Clarity) were designed with a Denon 3803 type receiver in mind for powerage. I also really like the Fresco as a center and, with more money, would really consider a set up with all Frescos and the Grotto as the subwoofer. Frescos are about $950 a piece and so would not be cheap. I wouldn't even have the Montages nor Fresco but I got a special deal which makes them even a better purchase for the price point. I didn't have the money nor the inclination to spend the money for separates or power amps.