The AV 300R features 5.1 channel Dolby Digital® , DTS® decoding, Pro Logic 2® processing, an AM-FM tuner, and a host of audio and video input/output options to get you all-connected. Whether your source is mono (TV, radio), stereo (CD, VCD) or multichannel (LD, DVD) the AV 300 R delivers pristine surround sound. And importantly, unlike most other AVRs in its category, the AV 300 R is designed for excellent sound staging and dynamics in both stereo and multichannel modes. … And did we mention that you don't have to mortgage your home to buy a Sonodyne home theatre system featuring the AV 300 R and a set of our award winning speakers?