This mode uses DTS Virtual:X with virtual height and virtual surround processing to realize a three-dimensional sound field when the height speakers are not used. This mode is suitable for playing discs recorded in DTS-ES.The surround back channel added to the surround-left and surround-right channels by a matrix encoder at software recording time is decoded by this unit’s matrix decoder and played from each channel (surround left, surround right, surround back). Use height speakers to realize a three-dimensional sound field. When the Pure Direct mode has been selected, the display turns off after about 5 seconds. This mode adds a spacious surround sound effect with stereo music sources. This mode plays back an even higher quality sound than the “Direct” mode.The following circuits are stopped in order to further improve sound quality. This mode plays back audio as recorded in the source. You can run all these tests for yourself. It decodes Dolby Atmos content and its positioning data in real time and outputs audio from the appropriate speakers, creating natural audio images regardless of the speaker layout. The Speaker Virtualizer feature will be supported via firmware update. The analog video input/output switcher and processor is disabled. Please select this mode to play back the contents encoded with Dolby Digital Plus. This mode provides an exciting, dynamic surround sound effect with your favorite action video games. When multi-channel signals are inputted, they are mixed down to 2-channel audio and are played back with no additional surround sound processing. This mode can be selected when playing sources recorded in DTS. Display indicator circuit of the main body (display will go off.). For optimum channel balance and surround sound effects, connect the monaural source to both of the front (L/R) audio inputs. This mode uses Dolby Surround Upmixer to extend various sources to natural and realistic multi channels for playback.Use ceiling speakers such as top middle speakers to realize a three-dimensional sound field. You will also see people say in order to get the subwoofer back on in Direct mode, you have to set Subwoofer Mode to LFE+Main. Also, there are 3 modes by pushing the Pure button: 'Auto', 'Direct', 'Pure Direct'. This mode works with monaural audio sources and delivers a surround sound effect. Please select this mode to play back the contents encoded with Dolby TrueHD at 192kHz/96kHz. This mode can be selected when playing sources recorded in DTS 96/24. This mode lets you experience an expansive surround sound effect when playing back through just the front (L/R) speakers only, and when listening with stereo headphones. This mode can be selected when playing sources recorded in DTS-HD. This mode uses DTS Neural:X Upmixer to extend various sources to natural and realistic multi channels for playback.Use height speakers such as front height speakers to realize a three-dimensional sound field. Video signals are only output when HDMI signals are played in the Pure Direct mode. This can be selected when “Speaker Config.” - “Surround Back” is not set to “None”. Home Theater Can anyone explain the purpose of Direct and Pure Direct … In this mode, the type of digital signal input, such as Dolby Digital, Dolby TrueHD, Dolby Digital Plus, Dolby Digital EX, Dolby Atmos, DTS, DTS-HD, DTS:X, DTS-ES, PCM (multi-channel) is detected, and the playback mode switches automatically to the corresponding mode.If the input signal is analog or PCM (2-channel), stereo playback is used. This mode is for playback with higher sound quality than in Direct playback mode. When I looked up the manual for the TX-SR8555 last night, it appears that Direct/Pure only disables the tone controls (and front panel display for Pure). Sound is output from the front left and right speakers, and subwoofer if connected. Discussion Starter • #1 • 30 m ago. Denon DCD-600NE Compact CD Player in a Vibration-Resistant Design | 2 Channels | Pure Direct Mode | Pair with PMA-600NE for Enhanced Sound Quality | Black Marantz CD6006 Premium Audio Sound …