LOL I can't afford to buy THAT time capsule at the moment
. But yes the EX800ST is the same model as the MDR-7550 if I remember correctly. I did not know about that adapter though, very interesting! That is very cool and would allow me to Frankenstein them with the Fiio UTWS5.
My best 2 Sony IEMS were the MDR-7550 and the
XBA-Z5, the latter was an insane 3D monster with a theater like BIG sound. Far from balanced but so amazing it didn't matter! Until the $$%#$%$E#%$% MMCX connector died and then broke when I tried to repair them, turning $700 into rubble...
The Linkbuds S are not those IEM's but is the next best sounding Sony IEM I have owned due to its balance sound and super comfy fit.
maybe someday I will be able to afford to take that time capsule for a spin...