Let me start by saying the HiBy R6III is an absolute beast when it comes to audio quality. The dual Class A and AB amplifiers deliver clean, powerful sound that makes my high-impedance IEMs sing. The first time I played a DSD512 track, the level of detail was mind-blowing - it's like hearing my favorite songs for the first time again.

The build quality is premium with its glass panels, though I do worry about durability. That said, the included case has already saved mine from a nasty drop onto tile floors. The 5-inch screen is bright and responsive - perfect for navigating Tidal or adjusting those MSEB settings.

Speaking of MSEB, this might be my favorite feature. The ability to fine-tune the sound signature without traditional EQ distortion is game-changing. Combined with those spatial audio plugins (EFOtech SVirtualizer is witchcraft!), it creates a listening experience that shames even high-end smartphones.

Performance-wise, Android 12 runs buttery smooth on the Snapdragon 665 chipset. I've had zero lag streaming Qobuz or scrolling through my library. Battery life impresses too - I regularly get 10+ hours in AB mode, though Class A does drain faster and gets quite warm.

Now for some gripes: The initial setup was frustrating with multiple failed updates before success. Also, why put headphone jacks on the bottom? It makes pocket use awkward. And while expandable storage is great, transferring files via Mac required workarounds.

Compared to competitors like FiiO M11 Plus (too quiet) or Shanling M3 Ultra (tiny screen), the R6III hits a sweet spot of power and usability at a reasonable price point. For serious listeners who want streaming capability without compromising sound quality, this DAP delivers in spades.