Advanced Direct Energy MOS Power Amp Pioneer incorporates highest quality amp circuitry featuring Advanced Direct Energy MOS FET devices which can achieve higher performance. Together with Pioneer's original Wide Range Linear Circuit technology they reduce power consumption while maintaining the power output of current models. In terms of performance, this technology contributes to flat damping factor characteristics across the audio spectrum. It also allows a wide range and especially ultra high fre- guencies to be reproduced more accurately and improves power linearity.