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 Surround	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.
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.
Dolby Atmos∗	This mode can be selected when playing back content encoded with Dolby Atmos. 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. Use ceiling speakers and Dolby Atmos Enabled speakers to realize a three-dimensional sound field.

Can be selected when using the Surround Back, Front Wide, Front Height, Top Front, Top Middle, Top Rear, Rear Height, Front Dolby, Surround Dolby or Back Dolby speakers.

DTS sound mode

Sound mode type	Description
DTS Surround	This mode can be selected when playing sources recorded in DTS.
DTS ES Dscrt6.1∗	This mode is suitable for playing discs recorded in DTS-ES. The surround back channel added using the discrete method is played as an independent channel. Since all channels are independent, the 360-degree spacial expressiveness and sound localization are enhanced.
DTS ES Mtrx6.1∗	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).
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.
DTS:X	This mode can be selected when playing back content encoded with DTS:X. It decodes DTS:X content and its positioning data in real time and outputs audio from the appropriate speakers, creating natural audio images regardless of the speaker layout. Use height speakers to realize a three-dimensional sound field.
DTS Neural:X	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.

This can be selected when “Speaker Config.” - “Surr. Back” is not set to “None”. link

Upgrade (Auro-3D)

Auro-3D sound mode

Sound mode type	Description
Auro-3D	This mode uses an Auro-3D decoder to create three-dimensional audio output using the Height Channel. It is ideal for playback of signals encoded as Auro-3D with a Height Channel. If signals not encoded as Auro-3D are input, an Upmixer called the Auro-Matic is used to create highly realistic three-dimensional audio output.
Auro-2D Surround	This mode uses an Auro-3D decoder to create Surround Sound without a Height Channel. It is ideal for playback of signals encoded as Auro-3D without a Height Channel. If signals not encoded as Auro-3D are input, an Upmixer called the Auro-Matic is used to output Surround Sound.

PCM multi-channel sound mode

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

Audyssey DSX_® sound mode

Sound mode type	Description
Audyssey DSX_® (A-DSX)∗	This mode creates playback for the new channels (front wide or front height) in 5.1-channel systems. By adding front wide or front height channels, the surround sound effects sound become more three dimensional and realistic.

This can be selected when a setting other than “None” is selected for “Front Height” or “Front Wide”, and a setting other than “None” is selected for “Center” in “Speaker Config.”. link

Original sound mode

Sound mode type	Description
Multi Ch Stereo	This mode is for enjoying stereo sound from all 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, 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. For Dolby Digital or DTS, the music is played back according to the respective channel number.

Sound mode type

Description

Auto

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. For Dolby Digital or DTS, the music is played back according to the respective channel number.

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 “Surround Parameter” to enjoy surround sound the way you like it. link

2-channel also includes analog input.

This mode plays back 2-channel sources in 5.1, 7.1, 9.1 or 11.1-channel playback. It cannot be selected when headphones are used or when the speaker configuration is front speakers only.

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.

These modes add new channels to 5.1-channel surround using Audyssey DSX_® processing. link

This can be selected when the input signal does not contain Dolby Atmos.

This can be selected when the input signal contains Dolby Atmos.

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.

These modes add new channels to 5.1-channel surround using Audyssey DSX_® processing. link

Upgrade (Auro-3D)

2-channel also includes analog input.

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.

It cannot be selected when headphones are used, or when a speaker configuration without front height speakers is used.

It cannot be selected when headphones are used, or when only front speakers are used.