• HIFI HEADPHONE AMPLIFIER --- Supports Most Headphones of High Impedance 16-150Ω, Signal-to-noise ratio> 100Db, THD + N = 0.0003%, Fully Filter Noise, Enjoy High-quality Audio USB DAC DECODING CHIPS --- ES9018K2M DAC Professional Chip Decodes High Sampling Rate Formats with A High Signal-to-noise Ratio and Low Distortion Which is Perfectly Compatible with All Versions of iOS and Android System Devices. SPECIFICATIONS --- Supports DSD/PCM Format, It Supports Decoding of More Formats with Outstanding Performance. It Is Capable of Decoding Up to 384 kHz /32 bit PCM As Well As Up to DSD64. RECHARGEBLE --- Built in 1500mAH Rechargeable Battery, Which Can Be Works for Approximately 8 Hours, Come with 50cm USB Charging Cable Provided; Charging Indicator for Power Checking; Volume Control Knob, Adjust Headphone Output As Your Will. BASS SWITCH --- Tailor the Bass Level to Your Liking Depending On the Music You Listen To..

Overview: The USB DAC DSD Headphone Amplifier employed is the ES9018K2M DAC professional chip, which decodes high sampling rate formats with a high signal-to-noise ratio and low distortion. It is allowed the headphone amplifier to support decoding of more formats with outstanding performance - it is capable of decoding up to 192kHz/24bit PCM as well as up to DSD64. Superior sound quality through expertly selected components and design, utilizing OPA1678 amp section. Feature： 1. HiFi Headphone Amplifier, supports most headphones of high impedance 16-150Ω, signal-to-noise ratio> 100Db, THD + N = 0.0003%, fully filter noise, enjoy high-quality audio. 2. USB DAC Decoding Chips, ES9018K2M DAC professional chip decodes high sampling rate formats with a high signal-to-noise ratio and low distortion Which is perfectly compatible with all versions of iOS and Android system devices. 3. Supports DSD/PCM Format, It supports decoding of more formats with outstanding performance – it is capable of decoding up to 192kHz/24bit PCM as well as up to DSD64. 4. Gain Switch, Gain switch for matching output to headphone power needs. 5. 1500mA rechargeable lithium battery for continuous 8 hours usage; 50cm USB charging cable provided; Charging Indicator for power checking; Volume Control knob, adjust headphone output as your will. Specification： Lithium Battery Capacity: 1500mAH Amp Using Time: More than 8 Hours Amp Battery voltage: DC3.7V - 4V Amp Internal Working Voltage: ±4V SNR>100dB THD+N 0.0003% Decoding SNR: 119dB 16-24bit/ 44.1-192kHz DSD64-DSD128Dop DSD64-128 (native) Output Power: 250mW in Impedance 16Ω Adapted Headphone Impedance: 16-150Ω Gain: 0dB - 8.8dB Dimension: 88 x 60 x 14(L x W x H) Special Notice: 1. Connect your mobile phone through the USB data cable, no driver installed needed, plug and play. 2. Connect your computer through the USB cable, it can be used as a USB DAC, decoding up to 192kHz/24bit PCM as well as up to DSD64. 3. When using with Macbook, no driver installed needed. When connected to a Win7 system computer, please install the driver before using this DAC headphone amplifier.（Please contact us and we'll reply you with a driver） 4. If you need to connect to your device by using OTG interface, Please do not plug the 3.5mm audio cable into the 3.5mm input connector of the amp. Package Content: 1 x Headphone Amplifier 1 x Micro USB long Data Cable（Power Cable） 1 x USB-C to micro USB Cable 1 x Micro USB to Micro USB Cable 1 x 3.5mm Audio Cable 1 x User's Manual