The FiiO BTR3 is a compact, portable Bluetooth amplifier and DAC designed for enhancing audio quality when using Bluetooth-enabled devices. It supports various Bluetooth codecs including aptX and AAC, allowing for high-resolution audio streaming. The device features a built-in rechargeable battery with impressive playback time, and it connects to smartphones and other devices via Bluetooth, facilitating high-quality audio output. The BTR3 is equipped with a 3.5mm headphone output and a USB Type-C port for charging and wired listening. Additionally, it has an OLED display that provides useful information such as battery life and connection status. Its lightweight design and durable build make it a practical choice for audiophiles on the go. With a user-friendly interface and functionality designed for both casual listening and more serious audiophile applications, the BTR3 aims to improve the listening experience across a range of devices and environments.