Xduoo XP-1 WM8740 High Performance USB DAC Portable Headphone Amplifier

Features XP 1 is the first direct digital audio data transfer from Android 4 0 or above cellphone also it can be used USB DAC for PC without having to drive DAC uses two parallel WM8740It built in a OP BUF architecture high slew rate OCL output capacitor less with Split power supply The device improves the sound quality immediately and let you own Hi Fi mobile phoneBass boost ON OFF SwitchAdopts the professional DAC chip WM8740 x 2Rechargeable li polymer battery with integrated charging systemUse aluminum shielded case to prevent external interference noiseOne 2 Setting Gain Switch to set GAIN according to the headphonesDirect digital audio data transfer from Android 4 0 or above cellphoneWith PC audio decoding function using high performance PCM2706 chip provides I2S interface for decoding supports up to 16bit 48KHz digital signalBuilt in a OP BUF architecture OCL output capacitor less with Split power supply ultra low distortion low noise high slew rate for analog signalSpecifications Power Source DC 4 2V built in li polymer rechargeable batteryOutput Power 150mW 32 load Frequency Range Audio In 10Hz 100KHz 0 5dB USB In 20Hz 20KHz 0 5dB Gain 3 7dBBass Boost ON 4dB low GAIN 11 dB high GAIN THD N 0 001 1KHz S N 110dBSuitable Earphone Impedance 8 300Playback Time 20H DAC input 30H AUX input Charge Time 7HSize 115 x 65 x 15mmWeight 150gPackage Included 1 x Xduoo XP 01 Amplifier1 x Micro USB Cable1 x Micro Micro USB Cable2 x Strap5