It's always hard to explain why you are hooked by a headphone or iem, but for me it's always an important TEST.
Sometime it's due to ''emotional audiophile intelligence'' other time to ''rational audiophile intelligence''.
For example, I wasn't hooked by the MEZE 99 NEO, but I sure was overwhelmingly hooked by the SUNDARA.
In this case, I think it's due to technicalities and how revealing is the resolution.
The DEVA do deliver an highly resolving and realist sound, it can deal with busy track with ease, showing every instrument in their individuality.
In fact, they are more vivid and energic sounding than the SUNDARA, but with a slightly more intimate soundstage. Bass is tigher, while SUNDARA have some mid bass warmth that thicken timbre without canceling it's transparency.
With the SUNDARA you begin by enjoying music to discover its nuance through critical listening mode....while it's the opposite with the DEVA, you begin in critical listening mode, your in there right now and finally learn to be immersed by this and enjoy music with higher resolution than you use too.
In term of construction, DEVA is decent, but their a lot of plastic. The ears cups are all plastic including the grill....but this make them very light to wear too. Bluetooth dongle is all plastic too. As for Bluetooth purpose, I do try going outside with them but feel ackward for 2 reason: this lok kinda clumsy with Bluemini and sound leakage is just too intense...as expected. I see more this for in house purpose, or in the park, in the forrest, well anywhere without human. Hum, yep, the DEVA are perfect for SOCIAL DISTANCIATION!
Will share more impressions soon, but i'm very impress by the performance of the DEVA.