With hundreds of car options, finding exactly what you want can be difficult. This is especially true when it comes to car stereos. As you scroll the list of features available, you might be asking yourself: what is an MP3 decoder?
In this guide, I define the MP3 decoder and how it helps your stereo. Further, I define what is the most convenient way to play MP3 files from your car stereo, referencing a wireless and wired way.
What is an MP3 Decoder?
An MP3 decoder decodes files into a format that will work on your car stereo. MP3 files are created on a computer.
The data plays well from a computer, but it is not always compatible with your car stereo, which means there has to be an MP3 decoder that reads the files so that you can hear the music you crave.
Some of the more modern CD players that are found in cars will read a data CD (with decoding built-in). However, most drivers are using MP3 files on smartphones and other devices.
How are these devices connected to the car stereo system? I will go through the different ways of connecting devices and let you know when to choose each one.
Ways to Play MP3s on Car Stereo?
#1. CarPlay.
If your music is on an Apple device, CarPlay is your best friend. It is compatible with iPods, iPads and iPhones. You can access your entire library while driving, giving you access to your favorite music or podcasts.
CarPlay consisted standard technology in many new cars. If you do not have a new car, but still want to upgrade, you can upgrade the head unit to get it. With this hands-free technology, you can continue to make calls and connect with loved ones while on the road.
#2. Android Auto.
Android Auto functions like Apple CarPlay, but is designed for Android devices. There are wired and wireless options available. With the app open on your compatible device, you can listen to music, make calls, or more from your car’s head unit.
However, not all Android devices are compatible, and the list of compatible devices is even more limited with wireless Android Auto.
#3. USB.
USB connection is more universally compatible and works with most MP3 players and phones. It provides a better connection, which isn’t always possible with a wireless connection. If you don’t have one built in to your car stereo, you can easily swap out the head unit for a new one with a USB port.
Alternatively, in some cases, you can load music onto your USB flashdrive and play from that through the car stereo if the car stereo has the compatible USB input port.
#4. Bluetooth.
If you have a newer head unit, you can probably easily pair your device through Bluetooth. This option will allow you to quickly enjoy all of your content. You may have a little trouble with your Bluetooth depending on the interface, once solved, you will be good to go.
The Bluetooth connection is not going to have the same level of clarity as a USB port would. That being said, it will be much better than using the Aux inputs.
#5. Aux Input.
While it may feel old-fashioned to physically plug your device into the Aux port, it remains one of the most reliable connection options.
The auxiliary input is never going to offer the best sound quality, but connection ease is a plus.
If your head unit isn’t modern, it probably doesn’t have USB outputs, but of course, they will have Aux outputs. Aux inputs are universal and similar to a headphone jack. You’ll have to select and manually play the songs from your MP3 player.
#6. FM Transmitter.
You can listen to MP3s with an FM modulator from any car stereo system; it is also relatively easy to use. Simply plug the FM transmitter into your auxiliary port or USB and set the stations accordingly. If you would rather connect via Bluetooth, there are Bluetooth devices available as well.
That said, using an FM transmitter is not a reliable solution for listening to music. If you are driving in an area that has a lot of FM radio stations (almost any urban area in the U.S.), you will undoubtedly run into poor sound quality occasionally, if not frequently.
To overcome this when using an FM transmitter, simply choose an FM station that does not have a strong reception. If the stereo is garbled, chances are it will be a good station to connect with. FM stations where someone is clearly broadcasting should be avoided when you do not want to have interference.
With a Bluetooth-enabled FM transmitter, you will pair your MP3 or vehicle-compatible device through the wireless connection. This pairs the stereo system to your media player without any wires. The only time that the FM modulator is a stronger option than a wired mode of connection is when there is no auxiliary input or any other means of connection (Bluetooth etc.).