I just bought a pair of QC20s, and the noise cancelling is amazing alongside the audio quality, BUT when ANC is off, the sound quality takes a massive dive. It sounds super muffled, almost like I have a piece of fabric in-between my ears and the earphones. Is this normal? I have QC35s as well and I don't experience this issue (when wired in and wireless). I also compared them to my SoundTrue ultra earphones with the ANC off, and they sound way worse than the SoundTrue Ultra earphones. I tested it with my Bose puck thing (not sure what it's called, it came with the Companion 20s) my phone, and the front audio on my PC, same issue.