This mode detects the type of input digital signal, and automatically selects the corresponding mode for playback.
Perform stereo playback when the input signal is PCM. When the input signal is Dolby Digital or DTS, the music is played back according to the respective channel number.

Press PURE to select “Auto”.

Auto surround playback begins.

This can also be set by pressing PURE DIRECT on the main unit.

Description of sound mode types

Dolby sound mode

Sound mode type	Description
Dolby PL	This mode can be selected when the Dolby PL decoder is used to play back 2-channel sources in 5.1-channel surround sound with an enveloping surround sound experience.
Dolby Digital	This mode can be selected when playing sources recorded in Dolby Digital.
Dolby TrueHD	This mode can be selected when playing sources recorded in Dolby TrueHD.
Dolby Digital Plus	This mode can be selected when playing sources recorded in Dolby Digital Plus.

DTS sound mode

Sound mode type	Description
DTS Neo:6	This mode can be selected when the DTS Neo:6 decoder is used to play back 2-channel sources in 5.1-channel surround sound. There are two playback modes: “Cinema” mode that is optimized for movie playback, “Music” mode that is optimized for music playback.
DTS Surround	This mode can be selected when playing sources recorded in DTS.
DTS 96/24	This mode can be selected when playing sources recorded in DTS 96/24.
DTS-HD	This mode can be selected when playing sources recorded in DTS-HD.
DTS Express	This mode can be selected when playing sources recorded in DTS Express.

PCM multi-channel sound mode

Sound mode type	Description
Multi Ch In	This mode can be selected when playing multi-channel PCM sources.

Original sound mode

Sound mode type	Description
Multi Ch Stereo	This mode is for enjoying stereo sound from all speakers. Stereo audio (2-channel) sources are played back via the front (L/R) speakers, the surround speakers.
Virtual	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.

Auto sound mode

Sound mode type	Description
Auto	In this mode, the type of digital signal input, such as Dolby Digital, Dolby TrueHD, Dolby Digital Plus, DTS, DTS-HD, 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.

Stereo sound mode

Sound mode type	Description
Stereo	This mode plays 2-channel stereo audio with no additional surround sound processing. Sound is output from the front left and right speakers, and subwoofer if connected. When multi-channel signals are inputted, they are mixed down to 2-channel audio and are played back with no additional surround sound processing.

Direct sound mode

Sound mode type	Description
Direct	This mode plays back audio as recorded in the source.
Pure Direct	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. Display indicator circuit of the main body (display will go off.) The analog video input/output switcher and processor is disabled.

Sound mode that can be selected for each input signal

The following sound modes can be selected using the MOVIE, MUSIC and GAME buttons.

Adjust the sound field effect with the menu “Surr.Parameter” to enjoy surround sound the way you like it. link

Input signal		Sound mode
2-channel ∗1		Stereo
		Dolby PL Cinema ∗2
		Dolby PL Music ∗2
		Dolby PL Game ∗2
		DTS Neo:6 Cinema ∗2
		DTS Neo:6 Music ∗2
		Multi Ch Stereo
		Virtual
Multi-channel ∗3		Stereo
	Dolby Digital	Dolby Digital
	Dolby TrueHD	Dolby TrueHD
	Dolby Digital Plus	Dolby Digital Plus
	DTS	DTS Surround
	DTS	DTS 96/24
	DTS-HD/ DTS Express	DTS-HD HI RES
		DTS-HD MSTR
		DTS Express
	PCM multi-channel	Multi Ch In
		Multi Ch Stereo
		Virtual

2-channel also includes analog input.

This mode plays back 2-channel sources in 5.1-channel playback. It cannot be selected when headphones are used, or when only front speakers are used.

The sound mode that can be selected differs depending on the audio format of the input signal and the number of channels. For details, see Types of input signals, and corresponding sound modeslink.