[domino584]

 
I don't feel qualified to answer that question since I no longer own the Alpha Dogs and ER-4S. However, I'll just say that the Alpha Dogs has more tactile bass from being an over ear headphone but the ER-4S might have better speed and neutral tonality.
 
The worthiness of the extra $300 will depend on what you value in a headphone. If you want better bass then perhaps it is worth it.

 
I see.  Would you be able to remember if the sound stage was significantly better over the ER4S?
 
In comparison to the MDs or the ER4S in regards to better bass?

 

[zowki]

  I see.  Would you be able to remember if the sound stage was significantly better over the ER4S?

I'd say that the AD has a wider soundstage over the ER4S. I believe it has better imaging too.
 

  In comparison to the MDs or the ER4S in regards to better bass?

I never heard the MD, I'm speculating that the AD has better bass than the ER4S from memory.

 

[domino584]

  I'd say that the AD has a wider soundstage over the ER4S. I believe it has better imaging too.
 
I never heard the MD, I'm speculating that the AD has better bass than the ER4S from memory.

Ah, alright.  Thanks a bunch.  Definitely going to consider the upgrade.

 

[mBTX]

My pair of AlpaDogs get's a lil bit crunchy in the 500khz(i only say 500 because if i drop that slider down a cppl db it goes away) range at high volumes. Has anyone else noticed this???