The Fosi Audio BL20C is a Bluetooth 5.0 enabled 2.1 channel stereo amplifier and U-disk player with a compact Class D power amp for home theater speaker systems. It allows for convenient and ...

A simple Bluetooth module designed for wiring into car audio systems ... a way of injecting the audio signal into the head unit’s amplifier stage, while making sure no other audio sources ...

This large headphone amp is almost twice as powerful as our top pick and can run on a built-in rechargeable battery, but it feels almost like carrying an extra phone with you. This Bluetooth ...