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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →No—not with every setup or every feature. The Fire TV Cube (3rd Generation, 2022) needs a free HDMI port, internet access, and an Amazon account for basic streaming. Soundbar audio and voice control depend on the TV’s ports and settings and the specific audio equipment; smart-home control requires Alexa-compatible devices and may require a separate hub.
What you need for basic TV setup
Amazon’s Fire TV Cube setup guide calls for a TV with an available HDMI port, a high-speed HDMI cable, internet access, and an Amazon account. Amazon says the HDMI cable is required but not included. Connect the Cube to the TV, select that HDMI input, and follow the on-screen setup instructions.
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The port details depend on the Cube generation. Amazon’s Fire TV device specifications identify the 3rd-generation Cube, released in 2022, as having HDMI 2.1 input and HDMI 2.1 output with ARC. Treat those as specifications for that model, not as a promise that every TV or every video and audio feature will work. Check the TV’s available ports and the features you want against the exact TV and Cube model.
How to connect a soundbar or AV receiver
For a typical soundbar setup, Amazon’s Fire TV soundbar setup instructions show the Cube connected to a non-ARC HDMI port on the TV, with the soundbar connected to the TV’s ARC or eARC port. Select the soundbar as the TV’s audio output. The exact ports and settings vary by TV and soundbar, so follow both device manuals.
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- If there is no sound, check that the TV is set to output audio to the soundbar and that the HDMI cable is connected to the TV’s ARC/eARC port.
- If the soundbar or receiver does not respond as expected, check the TV’s ARC and CEC settings and the equipment-control configuration.
- Amazon says certain functions of connected soundbars and AV receivers can be controlled through Fire TV settings; it does not promise control of every model or every function. See its Fire TV Cube Alexa guide for the stated equipment-control limitations.
Soundbar audio and Alexa Home Theater are different setups
Alexa Home Theater routes audio through compatible Echo devices rather than through a soundbar or AV receiver left in the sound path. Amazon’s ARC Home Theater setup instructions require a TV with HDMI ARC and a compatible Fire TV and Echo combination. For this arrangement, Amazon instructs users to disconnect the soundbar or receiver. Check the compatibility information for ARC Home Theater for the specific devices; having a Fire TV Cube alone does not establish that an Echo pairing is supported.
What to check for smart-home control
The Cube can use Alexa to control smart-home equipment that is compatible with Alexa and configured for it. Amazon’s smart-home connection guide directs users to add devices through the Alexa app. Amazon notes that most Wi-Fi smart-home devices work only on 2.4 GHz networks, so check the device’s network requirements if setup fails.
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- This bundle contains Fire TV Cube (3rd Gen) and Alexa Voice Remote Pro.
- The newest Fire TV experience (2026) – Our biggest update to Fire TV has a new, modern design that gets you to your entertainment fast. Browse dedicated content categories, pin more of your favorite apps, and get personalized recommendations from Alexa+. Spend less time scrolling, and more time watching.
- Smarter picks with Alexa+ – Getting to what you love has never been easier. Press the voice remote button and talk naturally to find what to watch across your apps, manage your smart home, or dive into virtually any topic.
- Our fastest-ever streaming media player - Brings lightning-fast app starts with an octa-core processor and is 2X as powerful as Fire TV Stick 4K Max.
- Hands-free Alexa with built-in mic and speakers - Control your compatible TV, soundbar, and receivers with your voice, even from across the room.
Do not assume the Cube replaces a smart-home hub. Amazon lists third-party smart-home devices without a hub as unavailable on Fire TV Cube. Requirements vary by device and connection method, including Wi-Fi, Zigbee, and Matter products; confirm whether the manufacturer requires a separate hub and whether its Alexa setup method is supported.
Quick Recap
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Rank #3
- Like-New Fire TV Cube is refurbished, tested, and certified to look and work like new and comes with the same limited warranty as a new device. Like-New Amazon devices may be packaged in generic Amazon-branded boxes.
- Our fastest-ever streaming media player - Brings lightning-fast app starts with an octa-core processor and is 2X as powerful as Fire TV Stick 4K Max.
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Choose the audio path that matches your equipment
| Setup | What to verify | Important distinction |
|---|---|---|
| TV speakers | A free TV HDMI port and the Cube’s basic streaming requirements. | The simplest path; picture and sound features still depend on the TV and Cube models. |
| Soundbar or AV receiver through the TV | TV and audio-device ports, ARC/eARC support for the intended connection, audio-output settings, and equipment-control configuration. | Voice control covers certain functions on configured equipment, not necessarily every model or function. |
| Alexa Home Theater with Echo devices | A compatible Fire TV/Echo combination and a TV with HDMI ARC. | This is a separate Echo-based audio setup; Amazon instructs users to disconnect the soundbar or receiver for it. |
Setup checklist
- Check that the TV has a free HDMI input. Have a high-speed HDMI cable, Wi-Fi details, and an Amazon account ready; Amazon says the cable is not included.
- Connect the Cube’s HDMI output to the TV and switch the TV to that input.
- Complete internet and account setup on screen. Configure equipment control during setup or in Fire TV settings for supported equipment.
- For a soundbar, connect it to the TV’s ARC/eARC port as directed by both device manuals, then check the TV’s audio-output and ARC/CEC settings.
- Add Alexa-compatible smart-home devices through the Alexa app and check whether each device needs its own hub.
- Place the Cube where it can hear voice commands. Amazon recommends about one foot of distance from speakers and says not to put the Cube in a closed cabinet. An IR extender, sold separately, can help control components inside a cabinet.
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