Connecting an Apple TV to an optical (Toslink) input requires an intermediary device, as modern Apple TV models do not feature a direct optical audio output port. The most effective solution involves using an HDMI audio extractor or splitter. This device splits the audio signal from the HDMI stream, allowing you to route it separately to your sound system or DAC (Digital-to-Analog Converter) via an optical cable.
Understanding Apple TV's Audio Outputs
Apple TV primarily relies on HDMI for both video and audio transmission. While this simplifies connectivity for modern setups, it means that direct integration with older audio receivers, soundbars, or DACs that only offer optical inputs isn't possible without an adapter.
The Solution: HDMI Audio Extractor/Splitter
An HDMI audio extractor is a small device that receives an HDMI signal, extracts the audio, and outputs it through various ports, including optical (Toslink) and often analog RCA stereo. It then passes the video signal through to your television.
Connection Steps
Follow these steps to connect your Apple TV to an optical input using an HDMI audio extractor:
- Connect Apple TV to Extractor: Plug one end of an HDMI cable into the HDMI output port of your Apple TV and the other end into the HDMI Input port on the HDMI audio extractor.
- Connect Extractor to TV: Use another HDMI cable to connect the HDMI Output port on the extractor to an available HDMI input on your television. This ensures video is still passed through to your display.
- Connect Extractor to Audio System (Optical): Plug one end of an optical (Toslink) cable into the Optical Output port on the HDMI audio extractor. Connect the other end of the optical cable to the optical input on your soundbar, AV receiver, or DAC.
- Power On: Connect the power adapter to the HDMI audio extractor and plug it into a wall outlet.
- Configure Audio Settings: On your Apple TV, navigate to Settings > Video and Audio > Audio Output and ensure the audio is set to output via HDMI. The extractor will then handle the conversion.
This setup ensures that your Apple TV's audio is digitally transmitted to your desired audio system while your video signal goes directly to your TV.
Choosing the Right HDMI Audio Extractor
When selecting an HDMI audio extractor, consider the following features to ensure compatibility and optimal performance:
| Feature | Description |
|---|---|
| HDMI Version | Ensure the extractor supports the HDMI version necessary for your Apple TV's capabilities (e.g., HDMI 2.0 or 2.1 for 4K HDR, Dolby Vision, or higher refresh rates). Compatibility is crucial for maintaining video quality. |
| Audio Outputs | Verify it has an optical (Toslink) output. Some extractors also offer RCA stereo outputs, which can be useful if you're connecting to a two-channel stereo amplifier and don't strictly require optical. |
| HDCP Compliance | High-bandwidth Digital Content Protection (HDCP) compliance is essential for playing protected content (e.g., streaming services like Netflix, Disney+). Ensure the extractor supports the latest HDCP version (e.g., HDCP 2.2 for 4K content) to avoid playback issues. |
| Audio Format Support | While optical connections are generally limited to stereo PCM, Dolby Digital 5.1, and DTS 5.1, ensure the extractor correctly decodes these formats. For uncompressed, high-bitrate audio like Dolby TrueHD or DTS-HD Master Audio, you typically need to use an HDMI connection directly to a compatible AV receiver, as optical doesn't support them. |
| Power Source | Most extractors require external power via a DC adapter. Check if it's included or needs to be purchased separately. |
For reputable options, search for "HDMI audio extractor with optical out" on major electronics retailers' websites or consider brands known for AV accessories like Monoprice or OREI.
Benefits of Using an Optical Connection
- Legacy System Integration: Ideal for connecting Apple TV to older sound systems, soundbars, or DACs that predate HDMI audio inputs.
- Dedicated Audio Path: Can separate audio from video if your TV or AV receiver has limited HDMI inputs or specific audio processing needs.
- Digital Audio Quality: Optical transmits a digital signal, maintaining sound quality for formats like Dolby Digital 5.1 and DTS 5.1.
Important Considerations
- Audio Format Limitations: Remember that optical connections typically do not support advanced audio formats like Dolby TrueHD, DTS-HD Master Audio, or Dolby Atmos (when transmitted via TrueHD/DTS-HD MA). If you require these formats, an HDMI connection directly to a compatible AV receiver or soundbar is necessary.
- Video Passthrough: Ensure the chosen extractor can pass through the full video capabilities of your Apple TV, including 4K resolution, HDR (High Dynamic Range), and Dolby Vision, if your TV supports them.
- Simplicity vs. Features: If you are connecting to a basic two-channel stereo amplifier and do not strictly need optical, some splitters offer standard RCA stereo output, which can be a simpler alternative.
By utilizing an HDMI audio extractor, you can effectively bridge the gap between your Apple TV's modern HDMI output and an older audio system's optical input, ensuring you enjoy all your content with high-quality sound.
