To set up surround sound on Apple TV, connect it to an AV receiver or soundbar that supports Dolby Digital 5.1 or Dolby Atmos, then go to Settings > Video and Audio > Audio Format and select “Auto� or “Dolby Atmos� if available. This article explains the exact steps, the audio formats Apple TV supports, and how to troubleshoot common issues like missing surround channels or no sound at all.
What Audio Formats Does Apple TV Support?
Apple TV 4K and Apple TV HD support several surround sound formats, but the exact list depends on your model and tvOS version. The most common formats are:
- Dolby Digital 5.1 – the standard compressed surround format used by most streaming services and DVDs.
- Dolby Atmos – an object-based format that adds height channels for a more immersive experience. On Apple TV 4K, Atmos is delivered via Dolby Digital Plus (streaming) or Dolby TrueHD (from a physical disc, if you use an external player).
- PCM (uncompressed stereo) – the fallback when no surround format is available or when the receiver doesn’t support the encoded bitstream.
Apple TV does not support DTS surround sound natively. If you have a DTS-only receiver, you will only get stereo or a “DTS not supported� message on the receiver display.
Before You Start: Check Your Equipment
Surround sound requires three things to work together: the Apple TV, the audio output device (receiver or soundbar), and the HDMI cable. Here’s what to verify:
- Receiver/soundbar must support Dolby Digital or Atmos. Look for the logos on the front or in the manual. Most modern receivers support at least Dolby Digital 5.1.
- Use a high-speed HDMI cable. For Atmos, you need an HDMI cable that supports at least 18Gbps bandwidth (often labeled “High Speed� or “Premium High Speed�). Older cables may cause audio dropouts.
- Connect Apple TV directly to the receiver, not the TV. If you connect Apple TV to the TV and then use ARC/eARC to send audio back to the receiver, surround formats may be converted to stereo by the TV. The simplest setup is: Apple TV → HDMI → receiver → HDMI → TV.
- Check your TV’s ARC/eARC port. If you must use ARC, make sure the TV’s audio output is set to “Bitstream� or “Pass-Through,� and the TV’s internal speakers are disabled.
Step-by-Step Setup on Apple TV
Once your hardware is connected, follow these steps on the Apple TV itself:
- Open Settings on the Apple TV home screen.
- Go to Video and Audio.
- Select Audio Format.
- Choose Auto (recommended). This lets the Apple TV negotiate the best format with your receiver. If you have an Atmos-capable system, you’ll see a separate option for Dolby Atmos – set it to On.
- If your receiver is older and doesn’t support Atmos, you can manually select Dolby Digital 5.1 instead of Auto. This forces the Apple TV to output a 5.1 bitstream rather than Atmos.
- Go back to Video and Audio and check Audio Output – it should show your receiver or soundbar name, not “TV Speakers.�
After this, play a movie or show that is known to have surround sound (e.g., a recent Netflix original). The receiver’s display should show “Dolby Digital� or “Atmos.� If it shows “PCM� or “Stereo,� the signal is not being passed through correctly.
Why Am I Only Getting Stereo? Common Causes
If you’ve set everything up but still hear only two channels, check these in order:
- Streaming app settings. Some apps have their own audio settings. For example, Netflix and Disney+ require you to select the 5.1 or Atmos audio track in the player – they don’t always default to it.
- HDMI cable too old. Try a different cable, preferably one labeled “High Speed� or better.
- Receiver input set to wrong mode. Some receivers have a “Surround� or “Movie� mode that upmixes stereo to all speakers. That’s not real surround – make sure the input is set to “Direct� or “Bitstream.�
- TV is stripping the surround signal. If you’re using ARC, go into your TV’s audio settings and set “Digital Audio Output� to “Pass-Through� or “Bitstream.� If the TV has an “Auto� setting, try that.
- Apple TV is set to “Dolby Atmos Off.� If you turned Atmos off earlier, the Apple TV may output regular Dolby Digital 5.1, which is fine, but if your receiver doesn’t support even that, you’ll get stereo.
Dolby Atmos vs. Dolby Digital 5.1: Which Should You Use?
Dolby Atmos is the newer, more advanced format. It adds height channels and treats sounds as individual objects rather than fixed channels. If you have a receiver with upward-firing or ceiling speakers, Atmos gives a more three-dimensional effect. If you have a standard 5.1 setup (no height speakers), Atmos will still play the 5.1 bed, but you won’t hear the height effects.
Dolby Digital 5.1 is the older, more compatible format. It works on virtually every receiver made in the last 20 years. The difference in sound quality between the two is minimal for most people, especially on a 5.1 speaker system. The main advantage of Atmos is the height layer, not better fidelity.
If your receiver supports Atmos, leave the Apple TV setting on “Auto� and turn Atmos “On.� If you experience audio dropouts or stuttering, switch Atmos to “Off� – that usually fixes it.
How to Test If Surround Sound Is Working
You don’t need a special test disc. Here are two easy ways to verify:
- Play a movie scene with clear directional audio – for example, a helicopter flying from left to right or rain falling behind you. If you hear sound from all speakers, it’s working.
- On the receiver’s front display, look for the audio format indicator. It will show “Dolby D,� “Dolby Atmos,� or “PCM.� If it shows “PCM� or “Stereo,� the Apple TV is sending a two-channel signal.
If you have an iPhone, you can also use the Apple TV Remote app to quickly change the audio format and see if the receiver’s display changes accordingly.
What About Soundbars and HomePods?
Soundbars with a separate subwoofer and rear speakers can produce true surround sound. A single soundbar without rear speakers will only simulate surround – it’s not the same. Apple TV works with any soundbar that accepts Dolby Digital via HDMI or optical.
If you have two HomePods (original or HomePod mini), you can set them up as a stereo pair and use them as the default audio output for Apple TV. However, this is not surround sound – it’s just stereo. The HomePod does not support Dolby Atmos passthrough from Apple TV; it plays Atmos content but downmixes it to its own virtual surround, which is not true multi-channel audio.
Frequently Asked Questions
Does Apple TV support DTS surround sound?
No. Apple TV does not support DTS or DTS-HD. If you have a DTS-only receiver, you’ll get stereo. Some third-party apps like Infuse can convert DTS to PCM, but that’s not true DTS output.
Why does my receiver show “PCM� instead of “Dolby Digital�?
PCM means the Apple TV is decoding the audio itself and sending uncompressed stereo or multi-channel audio. This happens when the receiver doesn’t support the original format, or when the Apple TV is set to “Auto� but the receiver doesn’t advertise Dolby Digital capability. Check your receiver’s HDMI input settings – some have a “Bitstream� vs. “PCM� option.
Can I use the TV’s built-in speakers for surround sound?
No. TV speakers are always stereo. You need an external audio system – a receiver with separate speakers, a soundbar with rear speakers, or a home theater in a box.
Why is there no sound at all after connecting to a receiver?
First, check the HDMI cable – try a different one. Then, on the receiver, make sure the correct input is selected. Finally, on Apple TV, go to Settings > Video and Audio > Audio Output and select your receiver. If it still doesn’t work, try a different HDMI port on the receiver.
Does Apple TV 4K support Dolby Atmos on Netflix?
Yes, Apple TV 4K supports Dolby Atmos on Netflix, Disney+, Apple TV+, and most other streaming apps. You must have an Atmos-capable receiver or soundbar, and the app must have Atmos content available (often marked with a badge).
Is there a difference between “Auto� and “Dolby Atmos On� in Apple TV settings?
Yes. “Auto� lets the Apple TV choose the best format based on your receiver’s capabilities. “Dolby Atmos On� forces Atmos output even if the receiver doesn’t support it – this can cause audio dropouts or no sound. For most setups, leave it on “Auto� and turn Atmos to “On� only if you have an Atmos receiver.
Related
Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.
More cards in this drawer
- China’s IPv9 Decimal Network Project Explained
- Fix Wired Earbuds That Only Work in One Ear
- What to Check Before Buying the Dip in Indian Shares
- Cool Raspberry Pi Projects: 15 Ideas for Any Skill Level3
- Terraform vs Kubernetes: Key Differences
- Internet Connectivity in Remote Areas: Options0.80 USD/GB