Thank you for viewing. This is the high-performance portable DAC/amplifier "H7" made by SHANLING. Purchased as a domestic genuine product in 2023. Used for about 50 hours. Never used outdoors. SD card playback and DAC function confirmed to be working. The included C to C cable is a bit unstable (may be a specification since purchase). 【About the condition of the product】 Both ends of the LCD memory are difficult to display. (Does not affect use) I think it's relatively beautiful, but please understand that this is based on a layman's standard. Please be sure to check the condition in the photos and purchase after you are satisfied. ■ Product Overview ・Supports up to 768kHz/32bit PCM, DSD512 ・Equipped with high-performance DAC chip AK4499EX + AK4191 ・Supports 3.5mm / 4.4mm / 6.35mm output (balanced output possible) ・Supports USB / Coaxial / Bluetooth (LDAC compatible) input ・Portable use possible with built-in battery ・Intuitive operation with analog volume knob ■ Condition ・Usage period: Used for about 3 months (indoor only) ・Appearance: No noticeable scratches or stains, generally clean ・Operation confirmed, no problems ・Stored in a pet-free, non-smoking environment ■ Accessories ※Everything in the photos is included. The charging cable is missing. ■ Other This is a versatile device that achieves high-resolution, high-output sound quality comparable to stationary devices while also being portable. Recommended for those who prioritize sound quality and want to seriously enjoy headphones and IEMs.