The best FM modulators must cover the entire FM spectrum, from 87.5 to 108 MHz, and have Bluetooth function. Moreover, the top FM modulators also have memory for radio station frequencies, sound filter, equalizer, RDS (Radio Data System) function, control panel with a minimum of useful buttons, remote control and a digital display.
FM modulators are perfect for those who understand that a good song or album can make even the hardest day in traffic a bearable one, just as they can turn a holiday walk with loved ones into a memorable experience. If your car has an audio system that comes from the factory with aux cable. or Bluetooth connection then you can stop reading here.
However, those of us who know what it means to be stuck with music on the radio or possibly with an old CD (that only who is left to make CDs today?), Will surely appreciate the advantages of an FM modulator of quality. In addition to streaming music from your phone, such a gadget can also help you make and answer calls by acting as a hands-free. Moreover, some models also have options for recharging your mobile phone or tablet.
The most important aspect in choosing an FM modulator is of course the signal quality, so that you can enjoy music and phone calls at maximum clarity. We invite you to continue reading our list of top modular FM that currently offers the best value for money on the market.
The Best FM Modulators in 2021
Roav SmartCharge – Nea Pleasant Recommendation
T11 Original – Alternative Recommendation
Nulaxy – High Compatibility
Tellur FMT-B6 – Ergonomic
Tuadia RDS – Reduced Budget
Roav SmartCharge is a reliable and truly modern FM modulator. Compared to other similar products on the market, this modulator seems a bit more from the future, or rather according to the digital age.
The best FM modulator, in the opinion of our editors, has a simple design and is very compact. Orange shades are a welcome color note for both USB and digital display ports. We find 2 USB slots that use powerIQ technology to charge connected mobile phones faster.
Alternatively you can insert a stick into a slot, but the main method of playing music is clearly via Bluetooth 4.2 (or jack), so you can connect the phone directly and play music. Once connected you can answer calls via the main button. It is accompanied by 2 other buttons that allow you to change the songs on the stick.
The most impressive part is the specially dedicated Roav app. This allows your phone to act as a remote control. This way passengers can change any aspect of music and radio without disturbing the driver. Another feature is the ability to locate your car through the application. Once the bluetooth connection is interrupted due to the distance, if the phone has the GPS function active, you can find the place where you left the car quickly, which is quite useful in unknown cities.
T11 Original – Alternative Recommendation
T11 is a quality FM modulator with a sound clarity that is difficult to match. It offers a very satisfying audio experience and has a 1.44 inch screen with LCD display.
We considered the shape of this model to be quite interesting, the screen is big enough and shows you the selected radio station, the phone number of the person calling you and the names of the songs it plays. The shades of blue on the screen and buttons are pleasant and do not bother you when driving. These, together with the glossy black and the fairly solid construction, make up a beautiful gadget.
T11 Original has a flexible foot through which you can place the modulator in the optimal position, to be as handy and easy to use. We find USB port for charging and jack. At the same time we have the option to connect via bluetooth without any interference or background noise. The model retains the last device it was connected to and restarts the connection when it is turned on again.
Allows you to answer the phone and end the call, comes with a decent microphone. When you are in a call, the echo and noise will be reduced to ensure satisfactory audio quality. This quality is also encountered when playing music, the volume can be a bit weak in some car models, but even then the quality of the bass and the clarity of the music is extremely impressive. You can use your mobile, a stick or even a microSD memory card (up to 32GB).
Nulaxy – High Compatibility
Nulaxy is a good FM modulator. It has a more sci-fi look due to its unique design. The screen is not connected directly through the same housing as the entry point, the two being connected by a flexible metal hose. The main reason is the intention to be easier to use and more adaptable for any vehicle or person.
To be truly a "car putty" this model is compatible with extremely many sources. In addition to the classic jack and bluetooth connections (4.2), we also find compatibility with Siri or any Apple product. The LCD screen is an impressive 1.70 inches in size, it displays the song name and playback time (when using a memory card). Below the screen we find the button to accept calls that can be pressed longer to reject them and double pressed to call the last number called, we must also mention that the modulator has a built-in microphone.
The product has a USB slot with a 2.4A output that automatically adapts the voltage to charge as quickly and optimally as possible any device connected to it. At the same time we find a QC3.0 fast charging port that allows compatible devices to charge in a stunning little time. Incompatible ones will load normally.
The flexibility with which Nulaxy can be positioned in any car, the interesting shape and the clear sound make this model a real useful gadget. And if you need the fast charging function, then you should seriously consider purchasing this product.
Tellur FMT-B6 has been designed in such a way that it can be used by the driver easily, it can be fixed in the ventilation grille which is more handy and offers in exchange for the place on board, quite many advantages.
The most important aspect of this modulator is, clearly, the magnetic support for the phone. So you can keep your phone in a better place so that you can use GPS or other guidance applications easily. Speaking of the phone, Tellur FMT is compatible with Google Assistant and Siri, so you can use voice commands, which is extremely easy to communicate without distracting you from traffic. Use the bluetooth function to connect, which also allows you to play music in the car.
We find two USB ports that allow you to recharge your devices, a microSD slot and a call answer button large enough and specially positioned for easy use.
The idea behind this model is basically to combine a car holder with a modulator, so you can use your phone for music, calls and navigation without having to juggle carefully from one place to another. Convenient positioning on the ventilation grilles makes it easy to use the phone with minimal risk. The built-in microphone helps you make calls without having to move the phone from the cradle or place it on the speakerphone.
Tuadia is a solution for those looking for a simpler modulator, whose sole purpose is to play music and nothing more. It comes with a mini remote control and does not offer the possibility to connect via bluetooth but it is, due to this fact, at a lower price.
If you don't mind using a jack connection or if you already have a stick ready with your favorite songs, then Tuadia could be the ideal modulator for you. It has a 1.4-inch LCD display where you can see the name of the song, which is also broadcast on the radio screen, volume and frequency.
When you prepare the music stick you can organize the songs in folders, the modulator will play them in their order. Using the USB cable port, you can recharge your phone, but it won't be as fast as the other modulators on the list. You can use the phone for music, when it is charged, if you use the jack. Alternatively, you can insert a micro SD into the device.
The nice part about this model is the mini remote control, through which those in the car can change the parts or the volume without having to stretch right to the dashboard. Also through this we find the possibility to go to EQ (equalizer settings). You can even change the parts on the outside of the car when you are grilling. The indicated distance is a maximum of 7 meters, but from 5 onwards small signal leaks can be observed.
We expected to hear two, three interferences considering the lower price, but they did not appear, and the audio quality is also a bit better than we expected. Overall, we believe the Tuadia RDS is the best cheap FM modulator.
Questions and answers
An FM modulator is a low-power FM radio transmitter that transmits a signal from a portable audio device (such as an MP3 player) to a standard FM radio. Most of these transmitters connect to the headphone jack of the device and then transmit the signal through an FM broadcast band frequency so that it can be picked up by any nearby radio. In the case of car transmitters, they usually have an SD or USB card slot or a jack through which you can connect your phone or an MP3 player.
FM transmitters are commonly used as a solution for playing portable audio devices on car radios that do not have an "AUX" auxiliary input jack or Bluetooth audio connectivity.
The best frequency for an FM transmitter in Romania is usually 87.5. This is because frequencies 87.5-88 are reserved for short-term services using a restricted service license, so regular stations do not use them.
However, in large cities, this frequency is often used by pirated radio stations and it can be more difficult to find a free frequency. Another good frequency to try is 108, but again, it could be used in big cities.
In our tests we usually use 87.5 and we did not encounter any problems, but it is best to try a few frequencies to find out which works best in your area.
Yes, FM transmitters can completely "drain" a car's battery, but they take a long time to do so. They do not consume as much power from the battery. If you know that your battery is in good condition and has a power corresponding to the factory parameters, it will not only be discharged from an FM transmitter. Some FM transmitters have an on / off button, in which case it is recommended to turn it off when you turn off the engine.
It also depends on the car model where you use it. A car with a larger engine usually has a larger battery, which makes it more resistant to a full discharge. When the car's engine is off, an FM transmitter can still consume, precisely because you can still use the transmitter even when the engine is off.
Power may be drained, but it's not enough to leave the battery completely out of power even if you leave it plugged in for an entire weekend. However, if you have any doubts about this, you can disconnect the FM transmitter to make sure that the battery power will not drain.
Almost every modern car has an FM radio and a lighter / power socket, which you can combine to play your music using an FM transmitter . This is a great option because the devices are relatively inexpensive and easy to set up.
The exact configuration varies by device, but these transmitters usually connect to the power outlet and connect to the phone via Bluetooth. After setting the device to an unused FM station in your area, you can play the audio of your phone via car radio.
This is a great option if your car doesn't have Bluetooth or a built-in auxiliary jack. However, depending on the number of FM stations in your area and the specific device you are purchasing, the audio quality may vary.