Offering a level of sound quality that is far above competing receivers, these AVRs are audiophile products by any measure. Equally at home with high resolution surround sound or two-channel music, they deliver stunning realism with everything from heavy-weight blockbusters to your favourite concert video. Further enhancing the performance of the new AVR390, AVR550 and AVR850, Arcam has also included the very latest room correcting technology from Dirac Research.