Just purchased Q40s after reading reviews here and listening in store. The reviews are right on the money for the most part. I have been listening to these for over an hour (can't stop) and am not bothered by the clamping force described in other reviews, certainly not as bad as the new Klipsch Mode M40 headphone. In fact, I find the clamping force will allow me to wear these during workouts (may look funny, but I would rather have the great sound). The bass and sub-bass is the best I have ever heard in terms of punch and extension, very exciting. I also agree that, as strong as the bass is, it doesn't bleed into the mids. I am listening to these with a FiiO E11 amp which definitely provides a fuller sound stage and even stronger bass.
The high end is perfect for my taste, but I am picking up some sibilance. Has anyone else experienced sibilance with these because I did not see that mentioned in reviews? Does anyone know if this goes away with burn in?
Quick comments:
1. I believe these are the best headphones on the market for bassheads under $300 (B&H is advertising them for $114.99 with free shipping).
2. The Q40 is not a one-trick bass machine. Clarity and accuracy in the mids and highs are on par with the best in this price range. Vocals are great as well. These sound great with everything from Carly Simon to Jay Z.
3. Fit is snug, not vice-like; the Q40 stock ear pads are not the most comfortable, but the pleather works for me since I plan to actually use these big puppies portably.
4. I am listening to my Q40 as I write this review and like them more and more with each passing minute; either sibilance is reducing or my ears are adjusting, but try out first to make sure this is not an issue for you.
5. To summarize, as I am not an audiophile with much technical data to share, I will simply say as a passionate music enthusiast the M-Audio Q40 is friggin' awesome!
Special thanks to RPGWIZaRD and MalVeauX for turning me on to these. You saved me about $1,000 compared to the Ultrasone Signature Pro that I was considering. I may get those someday, but these will hold me over, at least until the VModa M100 is released...