Feature: 1. High-Performance BT Connectivity: The XQ-50 Pro3 features a QCC5125 BT chip, supporting BT 5.1 for stable and lossless signal transmission. Support for aptX, aptX_LL, aptX_HD, LDAC, and other BT formats to provide the best possible audio quality over BT, ensuring that your music sounds as close to the original recording as possible, with rich detail and depth. 2. Advanced Digital-to-Analog Conversion: The CS8406 digital conversion chip converts BT signals into high-quality optical/coaxial signal output, perfect for connecting to digital decoders that require a high-definition sound source. Additionally, the CS43131 DAC chip converts BT signals into analog signals, providing a high-fidelity audio experience for your amplifier or active speakers. 3. Multiple Audio Outputs: This device offers optical and coaxial outputs, as well as an auxiliary output, ensuring compatibility with a variety of audio systems and devices. Its powerful headphone amplifier circuit delivers an output power of 360mW, making it capable of driving a wide range of headphones with ease. 4. Adjustable EQ Settings: The XQ-50 Pro3 supports EQ tuning, allowing users to customize their listening experience with different sound profiles, such as MOVIE mode and GAME mode, for an immersive audio experience. 5. User-Friendly Design and Controls: Features a 1.3-inch OLED color display screen and a multi-function key for easy operation. You can control power on and off, volume up and down, and manage BT connections with ease. The external high-gain BT antenna ensures a strong and stable connection. Specification: Input: DC5V 1A BT Version: 5.1 Supported Audio Formats: SBC, AAC, aptX, aptX_LL, aptX_HD, LDAC Communication Range: About 10 meters Headphone Output Parameters: Output Power: 360mW (32ohms@1KHz) THD+N: 0.008% SNR: 115dB Crosstalk: 85dB Other Output Parameters: THD+N: Optical=0.00087%, Coaxial=0.00087%, AUX=0.002% Output Level: Optical=0.5Vp-p, Coaxial=0.5Vp-p, AUX=2V Item Size: Approx. 12.0*8.0*4.0cm/4.72*3.15*1.57in Item Weight: Approx. 326g/11.5oz Package Size: Approx. 15*15*7cm/5.90*5.90*2.75in Package Weight: Approx. 473g/16.68oz Package List: 1 * BT Converter and Headphone Amplifier1 * TYPE-C Cable1 * Antenna1 * 6.35 to 3.5 Converter1 * User Manual