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Does the Fire TV Cube Have an Aux Input?

Last Updated Nov 27, 2021
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Amazon’s very own Fire TV Cube is a sleek, glossy, high-tech device that supports various formats such as 4K Ultra-HD, Dolby Vision, HDR, and HDR10. You can control compatible soundbars along with A/V receivers, but does it have an AUX input as well?

Unfortunately, the Fire TV Cube does not have an AUX input. It comes with a micro-USB, infrared port, HDMI port, and power input. You also get an Amazon IR extender cable and an ethernet adapter but no AUX.

Of course, there are other ways to link to external speakers if you’re looking to broaden your home theater system beyond the speaker the Cube already offers. While some may remain stalwart in their enthusiasm for AUX, they’ll have to settle for the Fire TV Cube’s other capabilities.

How to Connect External Speakers to the Fire TV Cube

There are a few ways to do this via other Echo devices, A/V, or HDMI, and it all just depends on what you’re trying to hook up and what you’re using.

The three primary ways that you can hook up the Fire TV Cube to external speakers are as follows:

  • A/V Receiver
  • HDMI Connection
  • To Echo Devices


There are also several Alexa-enabled devices that work well with the Fire TV Cube:

  • Sonos
  • Vizio
  • Samsung
  • Yamaha
  • LG
  • Sony
  • Bose
  • Nakamichi
  • JBL
  • Polk

Now, all of these brands have soundbar devices that are Alexa-enabled; however, with the possible exception of Sonos, not all of their soundbars are Alexa-enabled, so it’s important to check before purchasing.

Connecting to an A/V Receiver

Depending on how new your A/V receiver is, it may or may not have 4K capabilities. The Fire TV Cube definitely has 4K, but if you want to take advantage of it, the A/V receiver needs to have the correct port for 4K.

  1. Connect the A/V to your HDTV via HDMI cable.
  2. Connect a high-speed HDMI cable to the HDMI port on the back of the Fire TV Cube.
  3. Connect the other end to an available HDMI port on the A/V.
  4. If the A/V has a 4K enabled port, it will be labeled HDCPP 2.2.
  5. Set your TV sound output to A/V.

It’s as simple as that. If your A/V receiver doesn’t have 4K capabilities, it should still have an HDMI port; it just won’t be for 4K and will still work when connected to the Fire TV Cube.

Connecting via Other Echo Devices

While you can create what is called “whole home audio” by combining multiple Echo devices, it doesn’t work quite as well as a surround sound system. However, the overall sound quality is still immersive and of very high quality.

  1. Make sure all devices are on the same WiFi network.
  2. Open the Alexa App (Android or iOS).
  3. Select Devices at the bottom of the screen, then +.
  4. Select Combine Speakers > Home Cinema.
  5. Select the Fire TV Cube > Next.
  6. Name your Home Cinema Group.
  7. Select all of the Echo devices you want in your home cinema group.
  8. Create the group.

As long as your Echo devices are on, your audio from the TV will be on the Fire TV Cube and those speakers simultaneously.

Connecting to Soundbar HDMI

This works in much the same way as connecting to an A/V receiver. The soundbar is plugged directly into your TV, via the HDMI port. You then run an HDMI cable from your Fire TV Cube to the soundbar and adjust your TV settings to output sound from the soundbar.

The neat thing about this entire setup is that you can hook into an Alexa-enabled soundbar and then add other Echo devices to the lineup. Now you’ll have the surround sound you want—thanks to the soundbar and strategic setup of Echo devices—that you couldn’t get with Echo devices alone.

The Echo device is set up exactly as described in the above layout, but now you have the additional soundbar directly connected to the Fire TV Cube. This variation is your most optimal, unless you prefer to use your Echo devices for other things, rather than being crowded around in your living room.

In case you don’t prefer to use an HDMI cable, you can also link your Fire TV Cube to your soundbar with the Toslink optical cable. However, unless you have premium hardware for your soundbar, this method is notorious for having sound lag.

Final Word

While the Amazon Fire HD Cube doesn’t have an AUX port for you to use, there are still plenty of options to get a surround sound, home theater system set up, or just to add a few speakers if that’s all you want.

While AUX still beats Bluetooth out in terms of sound fidelity, it would seem that it is slowly taking more of a backseat role in favor of Bluetooth, HDMI, and optical.

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