The little FiiO BTR7 amplifier/DAC can be used with a USB connection or with Bluetooth. It's a great way to upgrade the audio output of a smartphone. Listening to music on the move is a relaxing way ...

The FiiO BTR7 is a compact amplifier/DAC that can connect to a smartphone or laptop to play high-res music files over USB or Bluetooth. Those who really love their music like to listen to tunes ...

The FiiO BTR7 is designed to work best when it’s used as a traditional DAC/amplifier: it plugs into your smartphone or laptop and makes the audio on your wired headphones sound a lot better. When ...

While wireless headphones seem to be taking over the portable audio market, there is still a big audience that craves the higher fidelity of wired headphones. With headphone jacks all but eliminated ...