Seamless one-click switching between modes With the three-position toggle switch, conveniently switch between the PC / BT / PHONE modes for the BTR13 to work as a computer sound card, Bluetooth decoder and or audio dongle respectively. The BTR13 works for any scenario. Global 10-band PEQ Thanks to the FiiO’s self-developed adjustment algorithm, get access to a high-quality PEQ easily adjustable through the app or the web* Supports sampling rates of 96k – Dual high-res Bluetooth/USB sound card modes The BTR13 is a portable DAC/amp suitable for various user scenarios. It uses the Qualcomm QCC5125 Bluetooth and supports Bluetooth codecs like LDAC*, allowing it to support high-resolution audio transmission up to 96k in both Bluetooth and USB DAC modes, ensuring you can enjoy high-fidelity music across various devices. 3.5mm and 4.4mm jack included for more convenience The BTR13 has been upgraded to the more commonly found 4.4mm balanced headphone jack, which offers more reliable and durable connections compared to the 2.5mm balanced headphone jack of the BTR3K. It also comes with a 3.5mm single-ended headphone jack. Making it compatible with various headphones you already have. Fully balanced audio – Dual high-end CS43131 Each channel is separately handled by a dedicated high-end Cirrus Logic CS43131 DAC. This effectively reduces crosstalk and allows for higher quality and purer sound. Independent headphone amplifier power supply An independent power supply, with low noise and capable of high current output, was designed specifically for the built-in amplifier of the CS43131 DAC. This significantly boosts the balanced output power of the BTR13 by 282% compared to the BTR3K up to 220mW – making it easily capable of meeting any portable audio needs. 0.96-inch large colour IPS display – easy to operate One major feature is the large bilingual (Chinese and English) display, which also features a newly upgraded colourful interface. This allows for the display of more detailed information, making it easier for you to intuitively understand the device’s status and adjust various functions. Patented car mode – High-quality music on the go The car mode not only allows the BTR13 to conveniently turn on and off with your car, but it also allows you to easily improve the sound quality of your car’s audio – making every trip full of high-quality sound goodness. All-around in-line controls - full control at your fingertips The 3.5mm jack supports the CTIA standard of in-line controls. Not only can you use the microphone on your headphones, you can also ply/pause/adjust the volume using the controls on your headphones cable.