1.Experience superior sound quality with the BTR13, a high-performance Bluetooth 5.1 USB Type-C Headphone Amplifier. 2.This compact device supports advanced audio codecs such as LDAC and Adaptive, ensuring you receive the best possible wireless audio transmission. 3.Featuring dual headphone outputs (3.5mm and 4.4mm), the BTR13 caters to a wide range of audiophile headphones and provides flexibility in your audio setup. 4.It also supports DSD256, delivering high-resolution audio playback for a truly immersive listening experience. 5.Whether you're an audiophile looking for a portable amp or a casual listener seeking enhanced audio quality, the BTR13 is your perfect companion for on-the-go high-fidelity sound. Bluetooth master control: QCC5125 (CPU+ dual-core architecture) chip: CS43131x2 Bluetooth version: 5.1 Bluetooth format: AAC///aptXLL/aptXAdaptive/aptXHD/LDAC USB : Driver-free support PCM96k Charging time: less than equal 2 hours Battery life: about 8 hours Output power 1: L+R2100mW+100mW (32Ω single-ended, +N Less than 1%) Output power 2: L+R210mW+10mW(3002 single-ended, +N Less than 1%) Output power 3: L+R2220mW+220mW(320 balanced, +N Less than 1%) Output power 4: L+R255mW+55mW(300Ω balanced, +N Less than 1%) Frequency response: 20Hz-40kHz (-3dB) Signal-to-noise ratio: 2128dB (A-weighted) Noise floor: PO Less than 1uV (A-weighted); Less than 1uV (A-weighted) Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:Black Material:ABS Package Contents: 1 x BTR13 host 1 x dual Type-C data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.