I have a question, since you have worked in headphone development, how these high end brands produce more open and detailed soundstage from tws while using 5-6mm single drivers vs what Others cant even achieve using 12-13mm drivers and dual drivers?
Cuz driver size is just one element of headphone design. A lot of R&D goes into housing structure, chips, cables, materials used in the drivers, airflow, eliminating some elements of sound while enhancing others, etc.
I like your review, but sadly I cannot understand the language. Can you explain the difference in vocal between airpod max and Hx, the translate is weird. I can use google translate myself.