Review on 🚗 Enhanced Bluetooth Car Audio Cassette Adapter, Cassette Aux Adapter with Bluetooth 5.1, Hands-Free Phone Calls, Song Trimming, and Volume Control, in Black by Boss Spangler

As the title suggests, it technically works. By connecting your phone to the adapter via Bluetooth and hearing a recognizable sound through your car's speakers. However, the sound quality is very poor. There's no bass, and when indeed stereo decoding occurs, then there's virtually no separation. No bass, no clear highs. I didn't bother to call him. IME, Bluetooth to FM Transmitter Adapter, offer significantly better quality, even if they don't transmit in FM stereo. a 3.5mm cassette adapter that I tried. If you still have a cassette player in your car and are looking for a similar solution, should honestly rather save a little more and swap out the head unit than keep trying different adapters (guilty by fee). Bluetooth devices can easily be purchased for $100 or less. Even though the cassette/FM adapter costs more than $20, it's a lot more fun over time.