Fosi Audio MD3 Portable Magnetic DAC Headphone Amplifier USB-C (Black)

The Fosi Audio MD3 MagDac Portable DAC Headphone Amplifier brings wired HiFi listening to phones, tablets, laptops, and portable setups through a compact USB-C design. Its magnetic back helps the amplifier attach securely to compatible phone setups, reducing cable drag while keeping the device close to your source for cleaner everyday carry.

High Resolution DAC Performance

Powered by an ESS Sabre ES9039Q2M DAC with ESS ES9603Q amplifier chips, the MD3 supports up to PCM 32bit/384kHz and native DSD256 through UAC 2.0. It gives listeners a dedicated audio path for IEMs and headphones, with support for both 3.5mm single-ended and 4.4mm balanced connections.

Listen While Charging

Dual USB-C ports help solve a common portable audio problem. The top USB-C port supports audio decoding, image transfer, and charging, while the bottom USB-C port supports audio decoding, image transfer, and firmware upgrade. This layout lets users keep music playing while power is connected during commutes, desktop sessions, travel, or gaming.

Personalized Circular Display

The MD3 adds a customizable circular display for a more interactive portable audio setup. Users can upload images, emojis, and animations, while the Vista Button adds direct control over supported display functions. At 50g without cable and 70 × 45 × 12 mm, the MD3 is made for compact daily carry without sacrificing balanced output capability.