Just received the Q45 and overall enjoy their package, but I am disappointed that with ANC turned on, the volume oscillates abruptly (especially the bass) every time I move my head up and down or side to side to the beat.
I know this may be an issue with ANC as previously reported by some users for the Q30 when going on a bump of the road, but it’s to the point if I smile or wink the sound changes.