To access the TCL Google TV's Sound Mode settings, follow these steps:

1. From the Home page select Settings > Display & Sounds > Audio > Sound Mode.
2. There are 6 different Sound Modes to choose from:
   1. Dynamic - Optimized Sound Quality.
   2. Standard - Recommended for daily use.
   3. Movie - Enhanced bass for the best movie experience.
   4. Music - Emphasized high and low pitches.
   5. Voice - Crisp and clear dialog.
   6.  Game - Virtual Surround Sound Effect to enhance the game experience.
   7. Sports - Virtual Surround Sound Effect with an emphasis on the human voice

1. Go to Settings. 

2. Next, select Display and Sounds.

3. Select Audio.

4. Select Audio Output.

5. Your output options are as follow:

           a. Auto – Your TV will automatically select the highest priority audio device to output.

           b. Internal Speaker

c. Wired Headphone – Audio outputs from connected wired headphones.

            c. ARC – Audio outputs from connected ARC device.

            e. Bluetooth – Audio outputs from Bluetooth-connected device.

            f. Optical – Audio output from Optical connected device.

            g. External Subwoofer- Audio Output from the external subwoofer and TV speaker at the same time. Please      manually select this mode after connecting the device.

            h. Wired Headphone + Internal Speaker – Audio outputs from both wired headphones and TV speakers   simultaneously

1. Go to Settings. 

2. Next, select Display and Sounds.

3. Select Audio.

4. Select Audio Processing

5. Your Audio Processing options are as follows:

            a. Auto – Enable the appropriate audio processing automatically.

            b. Dolby Atmos – Enjoy a better sound experience when listening to Dolby encoded audio.

            c. DTS Virtual:X – Enjoy a better sound experience when listening to DTS encoded audio.

            d. Off – May weaken the sound experience.

Note: If the EU is not familiar with these options, it’s highly recommended that they leave the selection on Auto.

1. Go to Settings. 

2. Next, select Display and Sounds.

3. Select Audio.

4. Select Advanced Settings

5. Your Advanced Settings options are as follows:

            a. Equalizer – Adjust the sound based on different frequencies.

            b. Audio Only Mode – Turns of the TV’s screen for an audio-only experience.

            c. Balance – Adjust the volume of the left and right speakers.

            d. Auto Volume Control – Equalizes áudio for a more relaxed experience. 

            e. Digital Audio Out – Select the audio format for the audio system connected with HDMI or optical digital cable.

            f. DTS DRC – This option is valid for DTS encoded format content.