Purchased in August of the 2025 (likely referring to the year) from a Chinese website, this product is said to be equal to or better than the Matrix Audio DDC among overseas audiophiles. I am selling it to organize my excess equipment. Operation has been confirmed. Due to the skeleton material, there are inevitably small scratches and scuffs, but I don't think there are any noticeable scratches like gashes. Please check the photos. Below is the manufacturer's product page: The USB interface performance solution continues to leverage Italian performance. New advantages: Coaxial output can handle all sampling formats below 384k, and supports coaxial DSD DOP128 and optical fiber coaxial DOP64, which are not supported by all interfaces on the market. By including ES9028 and ES9038 DAC chips, both coaxial and optical inputs can support DSD DOP. The sampling of the USB interface is indicated by colorful LEDs: Yellow: 44.1k Green: 48k Green: 88.2k Purple: 96k Red: 176k Blue: 192k Orange: 352k White: 384k Yellow: dsd64 Green: dsd128 Green: dsd256 Purple: dsd512 Features: 1: Uses FPGA to achieve SPDIF conversion output and DSD DOP output. 2: FPGA completes i2s data differential and normal i2s output. 3: Internal and external power supplies can be switched, and the use of an external power supply of 6-9V is recommended. 4: The external power supply uses an ultra-low dropout, low-ripple voltage stabilization IC. 5: Uses multi-phase independent power supplies, and each crystal oscillator, FPGA, and master control are driven by independent voltage stabilization ICs, reducing interference between power supplies. 6: Coaxial uses mkp1837 copper pin coupling capacitors and da101 coupling transformers. These should be familiar to audio enthusiasts. 7: 7-color sampling display, good for directly seeing the current sampling frequency. 8: We offer three versions of crystal oscillators: the standard version, a gold-plated shell 0.1ppm version, and a femtosecond version. 9: Uses 45.1584M and 49.152M frequency crystal oscillators.