HiBy FD3

Plugged this into my laptop and my phone and it works flawlessly with both. The 4.4mm balanced output gives my planars way more headroom than my old dongle ever did. Battery-free, no drivers to mess with, just instant sound.

Swapped between the 3.5mm and 4.4mm outputs with my planars and the balanced jack gave noticeably more headroom. Battery-free, so it just pulls power from my phone without any fuss. Genuinely impressed for the price.

Plugged this into my laptop and my IEMs suddenly had way more headroom than the headphone jack ever gave them. The 4.4mm balanced output is dead silent too, no hiss at all with sensitive gear. Battery-free is a nice bonus since it just pulls power from the USB port.