As for the sound right out of the box, the M100 uniwave will take your head off for the first 50ish hours. AllanS is right about the imaging. The hundreds of hours really is a thing. I have vinyl and about 3-4 times more cd's. Vinyl is the only thing that saved face right out of the gate. Cd's always had some level of offensiveness (that's what I call it) comparatively. Fast forward to around 300 hours for myself and sometimes I have to remind myself I'm listening to a cd. The M100 has really softened / relaxed, however one wants to say it, but it really, really improved in the last couple weeks. So yeah seeing that around 50% of the sound comes from that little bugger it does take time.