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For a receiver-based home theater, connect the Fire TV Cube’s HDMI output to an HDMI input on the AV receiver, then connect the receiver’s HDMI output to the TV. Select the matching input on both the receiver and TV. Audio and video formats such as surround sound, HDR, and Dolby Vision depend on the content and on the capabilities of every device in the signal path.
Connect the Fire TV Cube through the receiver
- Connect a high-speed HDMI cable from the Fire TV Cube’s HDMI output to an HDMI input on the AV receiver. Amazon says this cable is required for setup and is not included. See Amazon’s Fire TV Cube setup instructions.
- Connect another HDMI cable from the receiver’s HDMI output to an HDMI input on the TV. If you want the receiver to pass a particular resolution or HDR format to the TV, use a receiver input and output that support it, and confirm the receiver can pass that format through.
- Turn on the TV, receiver, and Cube. On the receiver, choose the HDMI input connected to the Cube. On the TV, choose the HDMI input connected to the receiver.
For the third-generation Fire TV Cube, Amazon lists one HDMI 2.1 output with ARC and one HDMI 2.1 input. Port labels and capabilities vary by model, so check the specifications for your Cube, plus your receiver and TV manuals.
Choose between receiver routing and TV ARC/eARC
| Setup | Signal path | When it makes sense |
|---|---|---|
| Cube through receiver | Cube → receiver HDMI input → TV | Use this as the straightforward setup when the receiver is meant to reproduce the Cube’s audio. Amazon recommends a direct HDMI connection from a Fire TV device to a soundbar or AV receiver when troubleshooting surround sound. |
| TV audio return | Cube → TV; TV ARC/eARC port → receiver ARC/eARC port | Use this when the TV returns audio from its connected devices to the receiver. The TV and receiver must support the needed ARC/eARC features, and the connection and settings depend on their models. |
ARC/eARC on a receiver connection is not the same as Alexa Home Theater. That feature routes audio to compatible Echo speakers. Amazon’s instructions for compatible Fire TV devices say to connect the third-generation Cube to the TV’s ARC port and disconnect an attached AV receiver for Alexa Home Theater. Follow Amazon’s Alexa Home Theater setup instructions if that is the feature you want.
Troubleshoot missing picture, surround sound, or HDR
No picture
- Check that the Cube is connected to an HDMI input on the receiver and that the receiver’s HDMI output is connected to the TV.
- Confirm the receiver is set to the Cube’s input and the TV to the receiver’s input.
- If a resolution or HDR format is missing, check that the receiver supports video passthrough for that format and that the TV supports it too. Amazon’s HDR and Dolby Vision troubleshooting guidance covers capability checks.
No surround sound or the desired audio format
- Verify that the content carries the format and that the Cube, receiver, and other connected equipment support it.
- Use HDMI for the Cube-to-receiver connection. Amazon says optical cables do not fully support surround sound.
- Check Fire TV audio diagnostics, where available, for connected-device capabilities. If the desired format is not detected, try a lower audio format. See Amazon’s Fire TV surround-sound troubleshooting.
Cube voice commands are unreliable
Amazon recommends keeping the Cube one foot (30 cm) from speakers and not placing it inside a closed cabinet so it can hear voice commands. This is placement guidance for voice pickup, not a requirement for the HDMI signal path.
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#1 Best Overall
Elebase USB to USB C Adapter for iPhone 18 Pro Max,USBC Car Charger Adapter
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Check compatibility before changing cables or settings
A connected receiver can limit what reaches the TV or which audio format reaches the speakers. For a desired format, verify support across the source content, Cube, receiver, TV, and the relevant HDMI connections. Consult each device’s manual for exact input labels, passthrough limits, and menu names; compatibility cannot be assumed from the presence of HDMI alone.
Quick Recap
Bestseller No. 5
Best Value
Anker USB C Hub, 5-in-1 USBC to HDMI Splitter with 4K Display
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
Sale
UGREEN USB to USB C Adapter Combo 4-Pack, 10Gbps USB C Converter Space Gray
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Rank #3
Sale
Anker USB C Hub, 7in1 Multi-Port USB Adapter, 4K@60Hz USBC to HDMI Splitter
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Rank #2
Anker USB-C Hub, 5-in-1 USB Hub for Laptops, 4K HDMI Multiport Adapter
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
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