Because the recorder is equipped with two HD digital tuners, two different TV programmes can be recorded simultaneously. There is no need to worry about missing out on recording a programme when two programmes overlap. In DR mode, the DMR-BS850 can record digital broadcasts in Full-HD picture quality. It can also stream-record and output the 5.1 channel surround sound signals (Dolby Digital, Dolby Digital Plus) contained in HD broadcasts. When connected to a 5.1 channel digital amp, the DMR-BS850 lets users enjoy outstanding surround sound while watching a TV program or playing back a recording.