Portable USB C DAC with Volume Control and Filters

The S9 Pro Plus Martha USB C DAC Dongle is a portable audio adapter that enhances sound quality. It features a balanced 4.4mm output and a standard 3.5mm headphone jack, allowing connection to various headphones. The device includes volume control and offers six different filter options to customize audio output. It supports multiple operating systems, including Windows, Mac, Android, and iOS. The compact design makes it easy to carry and use on the go.