pilgrimbilly
100+ Head-Fier
It's interesting how all the comments align on the "quality unaffected with glasses or not" conclusion. I wonder if there's something special with a) my head shape b) the K550 earpads or the c) the combination of a) and b)
On the K550 the disappearing of everything below 100Hz with glasses on is so evident that I force myself to go and put my contact lenses on If I am to write music or do critical listening and had assumed it has to be the same with every closed back set due to the physical gap created from the glass frame. The on-ears I had before never suffered from that as the pad was only as big as my ear so to speak so the frame's arm passes above it without getting in the way. On the closed back K550 though the drivers and pads are so large that the frame has to go "through" the pad and as such it's essentially lifting the pad away from my head on the top part, therefore creating a leak that allows ambient noise in and kills all low end as I said. It has always been like that.
I don;t have long/thick hair (short haircut all the time) or any special frame (very typical design), and my head is on the "small/narrow" side so I can't think of why these characteristics would impact the sealing particularly for me but I have faith in people's comments about the A50's sealing! I will get back on whether it works for me too after I get hold of my A50 in November hopefully.
I think there are way too many variables in head size (in all planes) and spectacles size/material to make anything other than subjective conclusions.
FWIW, I have a narrow and hairless head, only use metal framed specs with thin arms, and only one pair of headphones I've tried gave me seal problems - T5 2nd gen, and I didn't like them anyway...