Originally Posted by nicholars
The 840 was a bit bass light for me but the M50 had quite a lot of bass, not very good bass, but quite a lot of it, maybe the mad dogs will have enough bass for me then. Also if the rest of the sound is excellent then I can live with a bit less bass.
After reading through the recent comments posted in regards to your search for bass information with the Mad Dogs, I'd have to suggest that this is not a particularly good match for you. I'm like you in that I love my D5000 for bass and consider the M50 to have a lot of bass, just poorly implemented. Those that seem to enjoy the AKG models are typically claiming that the Mad Dogs have plenty of punch, even for EDM and bass-heavy songs. The AKG K701, to my ears, had almost no bass presence and it sounded very thin. I also ditched a pair of Senheisser HD-595 for lack of bass quantity.
The Mad Dogs have very good bass, but at low volume listening the mids are too prominent without EQ. They sound excellent with a lot of music, but they lack the bass slam that I enjoy with my D5000, and if I had to keep only 1 pair it would be the Denon's, as they come closer to the Mad Dog's strengths than the Mad Dog comes to the Denon's strengths, to my ears.
Mad Dogs are supremely comfortable, they isolate extremely well, and they essentially have no weakness throughout the frequency spectrum, but when compared to the bass quantity that you seem to enjoy, there would be a significantly noticeable difference that you may be able to improve with EQ and proper amplification.
Something to think about, though, is that you should have no problem reselling these if they didn't work out for you. I wouldn't be too concerned about not being able to return them.