This is the iFi audio ZEN Air DAC. It was purchased in 2022. It's in good condition, with no noticeable scratches, and appears to have all its original components. The iFi Zen DAC combines the functions of a USB DAC and a headphone amplifier, and supports high-resolution audio. Input voltage: DC 5V/2.5A Input: USB3.0 B socket (USB2.0 compatible) DAC: Bit-Perfect DSD & DXD DAC by Burr Brown Power consumption: No signal ~0.5W / Maximum signal ~2.5W Dimensions: 15.7 cm x 11.7 cm x 3.6 cm Thank you for looking.