Anyone know what Ultrasone or Audio Technica are comparable to the Beyer DT770 or Denon D2000.D1100 for bass impact??

So do any closed-back Audio Technica, Ultrasone, or Beyerdynamic have more bass impact with similar overall sound quality as the Denon D2000 or D1100?

For the Denon D2000. Was kind of wondering in general as well, like an approximate guess at what % increase of sound quality or bass impact can be expected from a portable amp like a fiio e7

How much would a portable amp increase the bass impact? If someone could give me an approximate % that would be awesome.

Is the Fiio E7 good enough to power the D2000? I'm really happy with them. But I was still waiting to see if someone could tell me if the D1100 has more or less bass impact than the D2000. I'd love to be able to find even more bass while at the same time saving money.

Also, what headphone Amp should I get if I have about $100 to spend? I'd like to use it with my ipod and PC.

I'll check the Denon 1100 out, they sound really good, and I'm into too much bass because I don't think that exists. So out of the ATH ES series the ESW9 are what you'd recommend? Which would you say are best for 200-250 range (So I can compare to the Denon D2000)

And do the SRH840 have the same/less/more bass than the 750dj? Also, I tried the Denon D1000 and didn't like them, I almost didn't buy the Denon D2000 b/c of how much the ATH-M50 beat them (imo) for the same price.

Well, I liked the Shures, their bass just had less impact than the D2000, H-fi 580, and the ath-m50 in my opinion. Are you saying the Denon D1100 hit harder than the D2000? And which Audio Technica closed headphones are more bassy than the m50's for under $300? 

So do the Shure SRH840 have more bass than the 750DJ's? I wasn't impressed with those and they were very uncomfortable. And are the best ATH for bass in the 200-250 price range the Audio Technica A900? And which between the the Beyerdynamic DT770 and the DT880 have more bass? As far as impact...

Anyone give me a suggestion for the Audio Technicas with the most bass for under 350, and under 250?

  Quote: Thanks, that rules out Shure for my tastes. Really looking for some bass >= the Denon D2000, and maybe a little better at blocking out sound.

While Iook for the 80ohm DT770 and wait on advice to find out which others I should try, I'm selling/trading the following Headphones:   New and factory sealed: Sennheiser HD595 - 150, Sennheiser PXC-310 w/ Active Noise Canceling - 225, Audio Technica M50 - 100, Dr. Dre Beats Tour...

Well, thanks for pointing out the 2 different versions of the DT770, mine are the 250ohm models, so I gotta sell these, and buy the 80ohm version. Unless someone has a better suggestion for a bassy headphone from Beyerdynamic. And I'm still hoping someone gives me advice for the most bass heavy...

Good to know, so what are the best closed, bass-heavy headphones for approx. $250 for each of these companies: Beyerdynamic, AKG, Audio Technica, and Ultrasone?