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best fm transmitter

The Best FM Transmitter 2020

The purpose of a FM transmitter is to broadcast a signal from a portable device such as a smartphone to a stereo system. Most FM transmitters will feature Bluetooth that enables a wireless connection to your audio device without needing an aux cable.

The best FM transmitter is the Nulaxy Bluetooth KM29, which has a 1.8 inch color display and four different inputs for streaming your own music.

Popularity of FM transmitters has seen a large increase because people simply want to listen to their own music as opposed to the radio. Without a Bluetooth, AUX, USB or TF card stereo, this has not been possible without the use of a transmitter.

FM Transmitter Comparison

FM TransmitterDesignFrequency Range
Nulaxy KM29Gooseneck87.5 - 108.0
VicTsingGooseneck87.5 - 108.0
IMDEN Q3.0Fixed & Compact87.5 - 108.0
LDesign WirelessFixed L Shape87.5 - 108.0
Anker SmartChargeFixed & Compact87.5 - 108.0
Tecboss PortablePower Cord87.5 - 108.0
GOgroove FlexSMART X2Gooseneck88.1 - 107.9
VicTsing QC30Fixed & Compact87.5 - 108.0
ZEEPORTE 7 LEDFixed & Compact88.1 - 107.9
WPWPOO RotaryRotatable87.5 - 108.0

Using a FM transmitter instead of installing a new head unit is a far more cost effective method of obtaining Bluetooth functionality. It will also work with the majority of smartphones regardless of the operating system they use.

It may be tempting to go for the cheap option but spending slightly more can provide you with improved sound quality and extra features.

Below is a list of the best FM transmitters that provide superior performance and comes packed with features such as Bluetooth handsfree calling.

The Best FM Transmitter

1. Nulaxy KM29 Bluetooth FM Transmitter

Nulaxy are by far the most popular FM transmitter manufacturer and they produce a variety of different models. The KM29 version is their new and improved model that features 1.8 inch color screen that provides useful data feedback.

The FM transmitter also has dual USB ports, micro SD and AUX inputs, which provides an alternative way to play music other than Bluetooth streaming.

Other features of the Nulaxy KM29 include:

  • Rotatable gooseneck design
  • Supports handsfree calling
  • Advanced noise cancellation technology
  • Built-in microphone
  • Smart fast charge USB port
  • Integrated voltmeter to show the condition of the battery
  • Fast forward or fast backwards functionality
  • 5 EQ music play modes
  • Caller ID display
  • Built-in over current, over voltage and temperature control
  • Uses Bluetooth 3.0 technology

Nulaxy are a brand that have been producing FM transmitters for many years and the KM29 model is their best yet. It’s packed full of intuitive features that improve the usability and performance. Compared to previous models, the larger display makes it far more aesthetically pleasing, which is a bonus.

Overall, the KM29 model by Nulaxy is the best Bluetooth FM transmitter that combines performance with value for the money.

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2. VicTsing Bluetooth FM Transmitter

VicTsing are another brand that produce a range of FM transmitters for cars and this model in particular is the most popular. It provides compatibility with Bluetooth, USB, AUX and TF card inputs and a similar design to the Nulaxy KM29 above.

This particular model only has a 1.44 inch LCD display but if you require a larger screen, the brand offers a 1.8 inch alternative.

Other features of the VicTsing FM Transmitter include:

  • 3.0 Bluetooth technology
  • 1.44 inch LCD display
  • Caller ID and audio information on screen
  • Bluetooth range of 5 meters
  • CVC Noise cancellation technology
  • Available in black or grey
  • 87.5 – 108.0 frequency range
  • Crystal clear sound quality and memory function
  • 5V 2.1A USB port for fast charging
  • Voltage meter of car battery

Both the VicTsing and Nulaxy are very similar in terms of performance and features but the VicTsing is slightly cheaper. For that reason, it is the best FM transmitter for the money that won’t disappoint and is backed by a reputable brand.

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3. IMDEN FM Transmitter For Car

For those that are looking for something stealthy and compact, the IMDEN FM transmitter is the best option. Unlike similar sized alternatives, this model supports handsfree calling and has dual USB ports integrated into the design.

The unique compact design uses the latest Bluetooth 3.0 technology but doesn’t provide AUX or TF card inputs. However, for the majority of people, this will not be an issue as Bluetooth is the most popular form of audio streaming.

Other features of the IMDEN Bluetooth FM Transmitter include:

  • Real time car voltage meter
  • Dual 3.0 USB Ports with quick charge
  • Built in microphone with echo cancellation
  • Compatible with all Bluetooth enabled devices
  • 87.5-108.0MHz frequency range
  • Blue LED digital display
  • Smart voice recognition
  • Ultra compact design
  • Multiple safety features

The IMDEM FM transmitter is the best at being discrete within the car and provides a range of functionality. It does lack some features but this won’t be an issue for most users.

It’s an excellent all-round FM transmitter that is perfect for those with limited space near their cigarette lighter socket in their car.

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4. LDesign Wireless FM Transmitter

The LDesign FM transmitter has a unique curved design with an easy to reach phone call button at the end. Unlike the alternatives, it also uses the latest Bluetooth version 5.0, which allows for mores stable performance.

As with many of the alternatives, it makes use of the CVC technology, which suppresses background and wind noise for clearer audio playback.

Other features of the LDesign In-Car Adapter include:

  • Available in 7 different colors
  • Bluetooth 5.0 version
  • Voltmeter feedback from the battery
  • TF, AUX, USB and Bluetooth music playing modes
  • Frequency range of between 87.5 and 108.0
  • A2DP sound processing for improved audio quality
  • Sleek and lightweight design
  • Built-in microphone for hands free calling
  • Impressive lifetime warranty

The only drawback of this FM transmitter is that it doesn’t display caller information, which many people require as they may not want to answer the call.

However, the unique design and impressive performance of the LDesign FM transmitter makes it an excellent choice. The brand also back up this device with a lifetime warranty, which is highly impressive considering the affordable price.

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5. Anker SmartCharge Bluetooth FM Transmitter

Anker produce a range of automotive electronic devices and their SmartCharge FM transmitter is highly rated. It has a compact design but unlike the IMDEN alternative, it has dual USB ports that provide high-speed charging.

For clearer handsfree calling, this FM transmitter uses the Bluetooth 4.2 version and advanced echo cancellation technology, which reduces background noises.

Other features of the Anker SmartCharge include:

  • Supports handsfree calling and audio streaming
  • Boosted FM signal and anti-static cancellation technology
  • Dual fast charge USB charging port
  • High sensitivity built-in microphone
  • Improved sound quality compared to the predecessor
  • Bluetooth 4.2 version
  • AUX output
  • 12 months warranty

It’s important to note that Anker state various vehicles that this transmitter may be incompatible with. However, for peace of mind, the brand provide a 1 year warranty.

Overall, it’s a compact and highly rated FM transmitter that is packed full of functionality. Unlike other smaller alternatives, it still has dual USB charging ports integrated into the device, which is highly desirable.

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6. Tecboss Bluetooth FM Transmitter for Car

The Tecboss FM transmitter is designed for cigarette lighters that are not usable from the driver position. For example, the socket may be located far away, in the armrest or elsewhere. This is made possible by using a power cord, which connects from the cigarette lighter socket to the location of the transmitter.

Provided with this device is an air vent clip or dashboard mount, which allows you to place the FM transmitter in a position that best suits your requirements.

Other features of the Tecboss FM Transmitter include:

  • Bluetooth version 5.0
  • Connects 2 devices at the same time
  • Noise cancellation technology for phone calls
  • Dual fast charge USB charging port
  • Supports Siri or Google voice control
  • Automatically switches between music streaming and calls
  • 7 LED color options
  • Bluetooth, microSD card and AUX input

The Tecboss Bluetooth FM transmitter ticks every box in terms of usability and it doesn’t come with an expensive price tag. Although the power cord can be a highly desirable feature, it can also get in the way if it’s not required.

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7. GOgroove FlexSMART FM Transmitter

The Gogroove is a premium Bluetooth FM transmitter that allows for 2 devices to be connected simultaneously. As this is a more expensive device compared to the alternatives, it comes with an impressive 3 year warranty for peace of mind.

Unlike many of the alternatives, this FM transmitter has larger buttons, which makes controlling the device without looking at it much easier.

Other features of the GOgroove FlexSMART X2 include:

  • 4 inch flexible gooseneck design
  • HSP, HFP, A2DP, & AVRCP Bluetooth profiles
  • Frequency range of 88.1 to 107.9
  • Side USB port for charging
  • Built in microphone with improved voice detection
  • On-board controls for hands free calling
  • Flexible gooseneck design
  • LED display feedback

For cars that have the cigarette lighter socket far away, the longer gooseneck design that is 4 inches long is very desirable. It’s also very flexible, which allows you to easily angle to the device to best suit your requirements.

Although the GOgroove is an excellent all-round FM transmitter, its expensive price tag makes the alternatives a better option in terms of value for money.

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8. VicTsing QC30 FM Transmitter For Car

Another FM transmitter by the VicTsing brand is their QC30 model, which is a compact alternative packed with plenty of new technology. It uses an advanced Bluetooth V5.0 chip that provides faster pairing and more stable sound quality compared to the competition.

The brand also state that the you can charge your your devices up to 4 times faster than standard USB ports, which is thanks to the quick charge 3.0 port.

Other features of the VicTsing QC30 include:

  • Dual USB ports
  • Bluetooth 5.0 connectivity
  • Siri and Google assistant functionality
  • Noise suppression technology for clearer calls
  • Blue LED lighting
  • 3 hot key buttons for controlling the unit
  • Suitable for both 12V or 24V power sources

The VicTsing is another highly rated FM transmitter that is packed full of features and functionality. The compact design is a requirements for many people but unlike the alternatives, this transmitter maintains all the functionality.

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9. ZEEPORTE Bluetooth FM Transmitter

The ZEEPORTE is a unique Bluetooth FM transmitter that has a colorful design due to the 7 color LED backlit light. As with the VicTsing alternative above, this unit also has a QC3.0 USB port, which allows for extra fast charging of your devices.

The brand state that it works with all Bluetooth enabled devices and the Bluetooth 5.0 technology provides a seamless connection.

Other features of the ZEEPORTE Bluetooth Transmitter include:

  • 7 color LED backlit lighting
  • Bluetooth 5.0 connectivity
  • DSP audio technology for clearer sound
  • Noise suppression (CVC technology)
  • Compatible with all Bluetooth devices
  • Provides excellent sound quality
  • Supports TF card and USB
  • Siri and Google assistant functionality

The ZEEPORTE FM transmitter is a unique option that provides great performance and looks great whilst driving at night. It provides an array of features and a clever design but it’s still one of the most affordable option within this article.

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10. WPWPOO Rotating FM Transmitter

The WPWPOO has a unique design that allows you to rotate it, which hides the USB ports and makes the unit more compact. If you decide to keep it rotated outwards, you are able to press the call answering button much more easily.

Depending upon your personal preferences, you are able to use the Bluetooth connectivity or a TF card to play music via the transmitter.

Other features of the WPWPOO Bluetooth Transmitter include:

  • Bluetooth 4.2
  • 12 months warranty
  • FM frequency between 87.5 – 108.
  • Available in black or silver
  • Compatible with most Bluetooth devices
  • Switches to hands free calling automatically
  • Suitable for both 12V or 24V
  • Bluetooth or TF card playing modes
  • Rotary design that hides the USB ports

Overall, the WPWPOO Bluetooth FM transmitter is a unique option that won’t disappoint. Although it doesn’t have the latest Bluetooth technology, it still provides excellent performance that is suitable for audio streaming and hands free calling.

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Bluetooth FM Transmitter Buying Guide

Listening to the radio or music that you simply don’t want to listen to can become very mundane. By using a FM transmitter, you can switch to steaming your own music without any wires or a complicated setup.

However, it’s not just audio streaming that a FM transmitter can offer, it can also act as a Bluetooth hands free car kit for safe and legal phone calls.

There are hundred of transmitters available and many are cheaper than the recommendations above. However, most of the budget option use older Bluetooth technology and don’t offer handsfree calling or long warranties.

To help you make an informed buying decision, we have produced the below guide regarding FM transmitters.

Bluetooth Version

As with most technology, they improve at a fast rate and you will want to ensure you get the latest available. Most of the FM transmitters available will use the Bluetooth version 3.0 and above. However, many brands are upgrading their new models to use the latest version, which is Bluetooth 5.0 and it has plenty of new features.

Some of the newest features include dual audio, further distance, better speed, improved sound quality and much more.

Music Streaming and Sound Quality

The main purpose of the FM transmitter is to tune into an unused frequency on your stereo and match it to the FM on the device. This is the way music is played through the cars speakers but the sound quality can vary between devices.

If you have just purchased car speakers for sound quality but are using a cheap FM transmitter, it may output distorted music. Paying the slightly more for a better sound quality device such as the Nulaxy is a worthwhile investment that you won’t regret.

All the recommendations use Bluetooth for audio streaming but there are other forms of outputting audio. These include using the USB, TF or AUX inputs but the simplicity and compatibility with your smartphone make Bluetooth the best option for audio streaming.

Hot Key Buttons

The buttons on the interface that allow you to use the device can transform its usability. Large hot key buttons that are easy to reach and don’t require you to look down at the device can make it far easier to use. These buttons can be used for switching between songs or answering calls without the need to touch your phone.

best bluetooth fm transmitter

Power Source

The majority of FM transmitters will run from a 12V cigarette lighter. For those that drive older cars and notice that the transmitter is not working, be sure to check the fuse that powers the cigarette lighter. From our research, this seems to be a common issue, which results in so many transmitters being returned.

If the fuse is working, check the continuity using an automotive multimeter, which allows you to see if there is any current running to the cigarette lighter.

For those that are using their cigarette lighter for other devices, you could invest into cigarette lighter adapter, which gives you additional sockets to use.

The Design

The design of the FM transmitter varies and it’s important that you choose one that best suits your requirements. Not every car is designed to use FM transmitters and they can get in the way with the wrong design.

For example, if you drive a manual car and the cigarette lighter is located next to the gear stick, there is the potential to hit the transmitter whilst changing gears.

If this is the case, we highly recommend choosing a gooseneck design so that you can angle the bulk of the device away from the gear stick. You could also choose a compact device such as the IMDEN device, which will be barely noticeable when plugged in.

Large displays are also very desirable because they can output the signal strength, voltage, audio and caller ID information. Those that are smaller will simply display just the frequency.

Drawbacks of FM Transmitters

FM transmitters are one of the best inventions in the car audio industry but there is one main drawback. If you travel long distances, the FM station that you choose may reach another radio station that would not be present in your local area.

This may interrupt with your audio streaming and become frustrating whilst travelling long distances because you’ll need to switch between FM stations quite frequently.


If you cannot afford a new head unit with various audio inputs, then a FM transmitter is the best option. They are cost effective solution that is easy to use and compatible with virtually all devices with Bluetooth connectivity.

All of our recommendations are able to play music via Bluetooth but some also offer AUX, USB and TF card alternatives. We advise that you choose a FM transmitter design that won’t become obstructive when plugged into the 12V socket.

The best FM transmitter will use the latest Bluetooth version, which provides better sound quality and connectivity. To avoid disappoint, if you are able to increase your budget slightly, it’s worth spending the extra for the latest Bluetooth version.

About The Author

procarreviews author

Dan is an automotive journalist and owner of over 10 cars ranging from supercars, luxury modern cars, classics and your good old beater cars. He always like to get his hands dirty with nut and bolt restorations and detailing sessions with the latest products. Feel free to read more about our team.

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