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How to Use TF Cards in Bluetooth Speakers

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If you have a premium speaker, you may wonder how to play an SD card on Bluetooth speakers. Micro-SD cards are a great choice for portable speakers when Bluetooth connectivity isn’t an option. After all, the best-sounding Bluetooth speakers should offer a memory card slot to play local music files. So, if you want to use an SD card for music playback, read this guide on how to use TF cards in Bluetooth speakers.


  • TF card is the original name for the Micro-SD card, and they store and play music files in the same way.
  • Use a computer or mobile phone to place music files on the SD card and insert it into your Bluetooth speaker.
  • Powering on the speaker should start the music, but some models require you to press the mode button.

How to Play SD Cards on Bluetooth Speakers

In addition to using audio files from the built-in card reader, you can learn how to use AUX mode in Bluetooth speakers. Having additional inputs ensures you can use your portable Bluetooth speaker, even with legacy devices like MP3 players.

In fact, you can use your MP3 players with a speaker like the one in our Grace Digital Mini Bullets II 900 MHz wireless speaker system review.

Insider Tip

Your speaker’s user manual should let you know how to format SD card folders and which card file formats work with the system.

While wireless speakers are convenient, nearby Bluetooth audio devices and Wi-Fi tech can destroy your sound quality. You should learn what causes static noise in Bluetooth speakers or why your Bluetooth speaker keeps cutting out, so you can avoid continuous playback interruptions.

Additionally, you can learn how to use Bluetooth through car speaker systems, especially with Bluetooth-enabled devices and transmitters. That said, you must understand how to connect a subwoofer to an amplifier if your system uses passive speakers.

STEP 1 Prep Your SD Card

Transfer your music files to the SD card, making sure they are in a proper format for your portable Bluetooth speaker. You will need a Micro-SD card converter for your PC, but some Android devices feature a card slot to transfer your files. Make sure to pick songs with bass, so you’ll get the full power of the Soundlink Mini II.

STEP 2 Insert the Memory Card

Insert your memory unit into the speaker’s Micro-SD card slot.


You cannot have a stable card connection if your Micro-SD card slot is dirty or caked with dust.

STEP 3 Power On the Speaker

Press the power button on the speaker, and your music files should play automatically. If your music doesn’t start playing, move on to the next step.

STEP 4 Press the Mode Button

You need to change the speaker mode on some models to play music from the Micro-SD card slot. Find the mode button and press it to start your favorite tunes.

STAT: A 2021 Pew Research Center survey showed that terrestrial radio listenership dropped by 6% between 2019 and 2020. (source)

How to Use a TF Card in Bluetooth Speakers FAQs

Is streaming sound quality better than MP3 files?

You can expect most music streaming services to offer a bitrate of 160 kbps. In contrast, MP3s offer an average bitrate of 320 kbps, the same as Spotify premium. CDs offer 1,411 kbps, making them the best pick for audiophiles.

How do I clean portable Bluetooth speakers?

Apply a small amount of water or rubbing alcohol to a microfiber cloth and wipe the speaker enclosure. Use a lint roller to remove bits of dust from the speaker covering. Lastly, use a paper clip or q-tip to clean the micro-USB charging port, AUX connection, and card reader.

What is the largest SD card memory capacity available?

While some devices can accept up to 2TB, the largest commonly-available card is 1TB. That said, you shouldn’t need that much for music storage, especially in MP3 format. For example, a 1TB card can hold between 100,000 and 250,000 MP3 music files.

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