Used indoors for about 30 minutes only, and then stored at home. Portable balanced DAC/amp, high-quality model supporting DSD and MQA. - Model Name: DH80S - Function: Portable balanced DAC/amp - Supported Formats: DSD, MQA - Color: Navy Blue - Accessories: USB cable, instruction manual Thank you for viewing. Notes: ■ We are unable to answer specialized questions or provide after-sales support. ■ There may be minor scratches or imperfections that cannot be fully described. ■ The actual product color may differ depending on your computer equipment and monitor environment. ■ This item has been stored at home in a non-smoking environment, but please refrain from purchasing if you are sensitive to minor imperfections or seek a perfect item. ■ Returns are not accepted to prevent the swapping of contents. ■ Please understand and agree to the above notes before purchasing (no cancellations/no returns).