The screen can be read easily outdoors, thanks to the brightness levels and colour saturation. M3 Pro’s 3.5in laminated front touchscreen is an 800 x 340 IPS panel with wide-viewing angles. Logos for Fiio and Hi-Res audio adorn the black glass panel on the rear. On the bottom of the M3 Pro is an unbalanced 3.5 mm analogue output for headphones/line-out and a USB-C port for charging.

The idea here is that you transfer your hi-res audio files to listen to on the go, in your car or when out and about walking. There is an SD card slot with up to 2 TB of expandable storage. The left side of the M3 Pro houses four round buttons with controls for power, volume up, play/pause/skip and volume down. It’s a premium-looking machine with a glass front and rear housed in a metallic frame, much like a smartphone (although it is much more compact a unit than a phone).

The slim and lightweight (70g) M3 Pro comes boxed with a Type A to Type C USB cable. I’ve previously reviewed the Chinese firm’s K3 headphone amp and digital analogue converter (DAC) and was super impressed with the build quality and audio output. The Fiio M3 Pro is a stylish and ultra-portable digital audio player (DAP). Fiio M3 Pro digital audio player also works superbly as USB DAC

Fiio m3 pro black