DTS* (Digital Theater Systems) decoder equipped DTS is a digital sound system introduced in theaters. Playback of DVD, LD, and CD recorded in DTS audio creates the environment of a theater or the sensation of a concert hall in your home. Dolby** Digital and Dolby Pro Logic No need to worry about program formats! When playing Dolby Digital or Dolby Pro Logic software in the 2 (Dolby) mode, decoding switches automatically according to the input signal. All you have to do is sit back and enjoy! (When connecting a DVD/LD player or LD player using the 2 RF (AC-3) output, a commercially available RF demodulator (RFD-1) is required.) ADVANCED THEATER modes Four sound modes that enhance DTS and Dolby audio performance by simulating the environment of a movie theater (DRAMA, ACTION), or the ambience of a concert hall (MUSICAL). With EXPANDED THEATER, you can enjoy Dolby Pro Logic encoded software in simulated Dolby Digital. Various Surround Effects (DSP) The DSP (Digital Signal Processing) surround mode allows you to transform your living room into six different sonic environments when listening to music or watching movies. Midnight Listening Mode When late night hours or other factors require that the volume be kept low, the surround effects may tend to become less than satisfactory. When the midnight listening mode is on, you can enjoy the effects of quality surround sound even at low volumes. DVD 5.1 channel input A special 5.1 Channel input makes the VSX–D309 fully compatible with Dolby Digital decoders and DVD player with 5.1 channel outputs. The Energy-saving Design This unit is designed to use minimal electricity when power is switched OFF (in Standby mode). Regarding the value of the power consumption in standby mode, refer to “Specifications” on pages 44. Remote Control of Other Components The supplied remote control can be used to operate a variety of other Components imply by recalling the appropriate preset code. In addition, the multi-operation functions allow you to perform a variety of operations automatically.