When you think about an FM modulator to play your audio source, it’s always the right decision to follow up with some well done research.
After all, not all FM transmitter are alike and they are separated by features, audio quality and broadcast distance.
Here’s the deal, they all do not have the same broadcast distance and they all are not equipped with the same audio components.
Some are engineered with quality components while others, well not so much.
Choose wisely my friends when you want a modulator that works well.