Bluetooth Speaker vs Auxiliary Cable: What You Need to Know

By The Best Portable SpeakersApr 21, 2022

It can be really frustrating when your Bluetooth speaker runs out of battery, and you don't have a charging cable with you.

But, did you know that you can't actually charge a Bluetooth speaker with an auxiliary cable? 

bluetooth speaker vs auxiliary cable

In this blog post, we will explain the difference between a Bluetooth speaker charging cable and an auxiliary cable, and why it is not possible to charge a Bluetooth speaker with an Aux cable.

We will also give some tips on how to charge a Bluetooth speaker without using a charging adapter.

Is it possible to charge a Bluetooth speaker via an Aux Cable?

No. You cannot charge your Bluetooth speaker via an Aux cable. An Auxiliary cable only carries audio at very low power, thus it does not have enough energy to charge your speaker. An Aux input is only used to send audio to your Bluetooth speaker.

What is an Auxiliary Port?

An auxiliary port allows wired connectivity when wireless for whatever reason is not available, or you just don’t want to use it.

It can be used to connect devices such as a Bluetooth or non-Bluetooth speaker, headphones or an audio mixer to an amplifier or other audio device including an MP3 player, TV, computer, smartphone, tablet, etc.

Auxiliary cables only carry audio at very low power.


An auxiliary input allows you to send audio to your Bluetooth speaker or other audio output device. This is a way to play music from an external device, such as an MP3 player, mobile phone and even a microphone, without the use of Bluetooth or Wi-Fi. So, you will often but not always find an Aux-in port on audio output devices.

Aux-in or auxiliary input is often called aux or auxiliary without the addition of ‘in’.


The opposite to Aux-in is auxiliary out port. Aux-out enables an external audio device to output audio to a Bluetooth or non Bluetooth speaker, earphones and so on.

This would be used if you want to play music on a larger system, such as in a car or home stereo system.

It is very rear to find a Bluetooth speaker with Aux-out, but most streaming devices will have an Aux-out, also often called a headphone jack. These devices include MP3 players, iPods, record players, CD players and even amps. You will even find an Aux-out on the back of most TV's.

So, the guts of it is Aux-out transmits audio from a device to your Bluetooth speaker and Aux-in receives the audio from your streaming device. That's it.

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How to use an auxiliary cable with your Bluetooth speaker

If you want to use an auxiliary cable with your Bluetooth speaker, all you need to do is connect the two devices by plugging the cable into the Aux-in port on your speaker. Next, take the other end and plug it into the Aux-out port on your device. Simple as that!

Now, you can play audio from your device through your Bluetooth speaker.

Keep in mind that not all Bluetooth speakers have an Aux-in jack, so be sure to check the speaker before you purchase, if you need one.

Also, one restriction of an auxiliary cable is you may not be able to control playback or change settings from your Bluetooth speaker.

The Benefits of using an Auxiliary Cable

The main advantage of an auxiliary cable is to transmit audio to your speakers from an audio device that isn’t Bluetooth enabled.

These are often older devices, such as a non-smart TV, your old cassette player or another vintage stereo sound system, that doesn't have built-in speakers, or the speakers aren’t grunty enough to enjoy music and other audio content.

You can also use a Bluetooth speaker with an Aux-in port to play audio in auxiliary mode.

Using an auxiliary cable typically results in better sound quality than connecting to a Bluetooth speaker via Bluetooth. This is because the audio signals not been compressed when traveling through an auxiliary cable.

However, the difference would almost be unnoticed to the average ear. If you're a music guru, then you may be able to notice it.

How is a Bluetooth Speaker Different from an Auxiliary Cable Speaker System?

A Bluetooth speaker is a standalone audio system that doesn't require any wires or cords to connect to your devices. It easily pairs with your Bluetooth enabled phone, tablet or computer using Bluetooth technology, and can transmit music or other audio content from these devices without any interference.

An auxiliary cable conventional speaker system, on the other hand, is a wired connection used to hook up external speakers to your devices.

It's most commonly used to play music from phones and MP3 players through larger speaker systems. Because it's wired, an auxiliary cable typically provides better sound quality than a Bluetooth speaker.

However, it can be less portable and more time-consuming to set up. Also, a standalone system will need an amp to power the speakers, unlike a Bluetooth speaker which has a built-in power supply.

How to charge a Bluetooth speaker with a broken charger port

If you have a Bluetooth speaker with a broken charger port, you can still charge it using a standard micro-USB cable. This is of course if it has a USB port for charging as well.

Otherwise, when it comes to electricity, it would be best to replace your Bluetooth speaker with a new to avoid having issues or shocking yourself.

As mentioned above, unfortunately, you cannot charge your Bluetooth speaker via an auxiliary port. 

Other ways to charge a Bluetooth Speaker

If you don't have an AC adapter and still want to charge your Bluetooth speaker, it is still possible.

Most Bluetooth speakers charge via USB cable of some description, which plugs into an AC adapter. However, you can use the USB cable via other means to charge your speaker.

Anything with a USB port that you can plug the cable into will charge your Bluetooth speaker. These include, but are not limited to laptops, docking stations, AC adapters of other electronics that take USB cables as well as multi outlets.

So, if you lose your USB AC adapter or forget it when you're out, there are plenty of other ways to charge your Bluetooth speakers, as long as you still have the USB cable.

Where can you purchase a Bluetooth speaker, and what are the costs associated with them?

Bluetooth speakers can be purchased at most retail technology stores and online retailers. They typically can cost under $10 and up to $150, depending on the size, quality, and brand of the speaker. However, there are some Bluetooth speakers that cost $100's of dollars.

You can also support us right here at The Best Portable Speakers by buying one of the fabulous Bluetooth speakers that we recommend.

Have a look at all the awesome speakers, earbuds and marine speakers we recommend. There are light and compact speakers for hiking, biking, camping as well as larger options with greater sound and bass for all sorts of parties and events.   

You're bound to find a great music playing option, even with an auxiliary plug included.


Bluetooth speakers are a great way to listen to music without having to deal with wires.

As you can see from this article, and hopefully, you understand now why you can't charge a Bluetooth speaker with an auxiliary cable.

An auxiliary cable as you can see is still a handy piece of technology that can be used to connect an audio device to a Bluetooth speaker.

can you charge a bluetooth speaker with an aux cable
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