I of an Onkyo TX SR 507 switches to the Harman Kardon receiver. And am fully convinced of the sound quality of Harman. It is true that the Onkyo HD sound formats the. But normal Dolby Digital or DTS sound on the Harman worlds better than HD sound on the Onkyo. So who can do without the new audio formats and a cheap receiver will scan produces a warm crystal clear sound and looks of the design very well should strike at this unit. In addition, you can switch off the receiver completely and drive not only in standby mode.