Sorry Jogawag but I don't agree with this. RY4s UE is significantly brighter than Vido. To my ears. Emx500 is bright too, but less agressive than ry4s.
@rad7 To me Vido is L shaped and Ry4s is more V shaped.
Willsound Mk2 also has some L shaped sound but is a bit more neutral with full bass. Vido is warmer slightly in the mids with neutral treble and full bass. It's my rec for bassy warm earbud but not muddy or too dull.
Edit:my bad you are talking about ry4s not UE version? Might be less bright sorry! I jumped the gun on that comment
I still don't consider the Vido V shaped though, it's quite neutral after the warm low end. I've never felt fatigue from vido treble but it has enough presence to sound balanced. It's a little like the shozy bk but less peaked so it's not as sharp.