The Fosi Audio DS1 is a compact and powerful portable headphone amplifier and DAC combo, ideal for enjoying high quality listening from a source such as a smartphone. Its digital / analog conversion section uses a ES9038Q2M DAC chips ensuring a detailed and accurate sound reproduction, while supporting high resolution audio streams up to PCM 32bit 768kHz and DSD512. Alongside them, its amplifier stage is capable of delivering comfortable power to accompany both demanding headphones and more sensitive earphones, all while maintaining low distortion and noise levels and high SNR.

On the connectivity side, the input is done from a USB-C connector. For the outputs, the DS1 provides a single-ended Jack 3.5mm and a balanced Jack 4.4mm for even more versatility.