Actually, imho this is a bad review. DMS is comparing apples to oranges by mentioning the Radiance. His claim that Bathys replaces Radiance and oh so "Radiance" is still a good headphone... I pulled the trigger on the Bathys. Listening to them since Friday and being the owner of a pair of Radiance I immediately called bull****.
Bathys don't offer as much air, space and stage as Radiance. It's only natural, because... the ear cups are considerably smaller and there's no small vent like on the Radiance. Vocals are much more intimate and beside the ear. There's even more warmth and bass, because they're designed for noisy places and not a leisure home listening experience, although the app does offer such an profile and it actually works.
But, in the category of wireless, over-ear, ANC headphones... Bathys is absolutely bonkers. The sound is quite close to wired HiFi headphones, which is amazing. And when you want a small form-factor solution without having to carry the considerably bulky Radiance carrying case, a portable dac/amp or a DAP then you will be very satisfied.
Heck, I applied my EQ profile for Radiance to Bathys and it works well. Paired with BTR5 out of curiosity and for better volume control (yes, Android has bad volume control). I'll do some back and forth comparisons. And share further thoughts.
But nevertheless, DMS has disappointed me in this review.