Brand new and high quality. Features: Built-in high-performance DAC chip supports 192KHz 24Bit sampling rate for optical and SPDIF signals, with no signal input attenuation circuit. Plug and play, easy to install and use, compatible with PS3, DVD, PS4, Plasma Blu-ray home theater, AV receiver, etc. Designed for gamers and music lovers, supports all headphones in the 32-600Ω range. Integrated volume adjustment circuit and control knob effectively solve the low volume issue when using high-impedance headphones with DAC products. Innovative 192KHz DAC adjustment function delivers shocking stereo sound, powerful bass, and creates a perfect immersive audio experience. Specification: Supports Audio Format: PCM Separation Degree (1KHZ): 94DB Frequency Response: 20Hz~20KHz -0.2db Signal-to-Noise Ratio (SNR): -100DB Total Harmonic Distortion (THD+N): 10Hz~20KHz 0.25-0.065% Blocking Time: 0.577Fs Sampling Frequency: 32~192 KHz Bitrate: 16~24 Bit Headphone Output Level (Adjust to maximum): 3V RCA Output Level (Adjust to maximum): 9V Headphone Output Power (Adjust to maximum): (32Ω) 30mW Headphone Output Impedance: 0.8Ω RCA Output Impedance: 450Ω Working Voltage: +5V Maximum Voltage: +6V Maximum Power Consumption: 75mA Working Temperature Range: -10-70℃ Storage Temperature Range: -60-150℃ Working Humidity Range: 10% - 80%RH (No condensation) Storage Humidity Range: 5- 90%RH (No condensation) Size: 10x95 x28 mm/3.94x3.74x1.1 inches Note: No retail packaging. Allow 0-1 cm error due to manual measurement. Please ensure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Set x Digital to Analog Audio Converter