I've just installed the new pads and so far, so great! Install was pretty easy, no harder than any other pads I've replaced before. They are a bit larger than the original pads on my Soundocre Q30 headphones, but they worked just fine. They are super comfy and do not affect the sound quality at all that I have noticed. They have very slightly diminished the noise cancelling though, but the noise cancelling on these phones wasn't very robust to begin with so I don't consider this a con. I just wanted to replace the original pads that were falling apart and these have far surpassed expectations.