FiiO BTR13 Bluetooth Headphone Amplifier with LDAC, aptX Adaptive, aptX HD, AAC (Dual CS43131 3.5mm Unbalanced & 4.4mm Balanced Output) (Black)The FiiO BTR13 is a small, portable Bluetooth DAC that offers flexibility with PC, Bluetooth, and phone modes. It supports advanced PEQ and is compatible with a wide range of headphones thanks to its 3. 5mm and 4. 4mm headphone outputs. The amplifier's independent power supply provides excellent output power, while the color display makes it easy to use. The patented Car Mode increases comfort while traveling, and support for various codecs guarantees