Main Features:- Using asynchronous audio transmission technology
- Support ASIO, WASAPI and other drivers
- Along with line output, optical signal output and amplifier output
- Can be powered by computer directly, convenient to use
- Ultra-small size makes it easy to carry
- Can connect to a computer USB / mobile phone / tablet directly as a OTG to USB high-quality USB decoder

Specification:
- USB input sampling rate: 32 - 96KHz ( including 88.2KHz )
- Bit width: 16 - 24bit
- USB transmission specifications: USB 2.0 asynchronous audio transmission
- THD + N: DAC less than 0.003pct; AMP less than 0.005pct
- Frequency response: 10Hz - 48KHz
- Impedance adaptation: 8 - 600 ohms
- Maximum output power: 130mW + 130mW / 32 ohms
- Dynamic range: 110dB ( 24bit )
- SNR: DAC more than 105dB; AMP more than 100dB
- Output amplitude: 2.5Vrms
- Power consumption: Less than 0.5W
- USB receiver chip: TAS1020B
- DAC decoder chip: ES9023
Design: Mini,Portable
Compatible with: Laptop,Mobile phone,PC,Tablet PC
Supports: Volume Control
Connection: Wired
Interface: 3.5mm Audio
Audio Source: Electronic Products with 3.5mm Plug Package weight: 0.197 kg
Product size (L x W x H): 8.70 x 5.80 x 0.90 cm / 3.43 x 2.28 x 0.35 inches
Package size (L x W x H): 12.80 x 9.20 x 5.40 cm / 5.04 x 3.62 x 2.13 inches Package Contents: 1 x M2 PRO Amplifier, 1 x USB Charging Cable, 1 x MIC USB Input Cable, 1 x English Manual