Would people who have tried this or similar say that sound image is changed drastically? I hear you lose bass response in the M50x's, and I rather not lose it, because it's pretty good as of now with stock leather pads
From my personal experience, it didn't change enough that I'd call it a drastic change. It sounds almost exactly the same as with the stock pads. The bass response is just ever so slightly less but nothing that is game-changing. I love me my bass so take that for what it's worth.
Because velvet pads inherently ‘leak’ compared to the stock ‘pleather’ pads, we had to redesign the shape, thickness and earhole size of these pads to match the sound signature of the stock pads as closely as possible. This is why many users comment that our velvet pads alter the sound less than some others.
Hope this helps!
Chris Carfagno
The Sound Professionals, Inc.