The SR225 and the AD700 are definetly two different beasts. The graph tells the tale.

http://www.headphone.com/buildAGraph.php?graphID%5B0%5D=373&graphID%5B1%5D=2661&graphID%5B2%5D=&graphID%5B3%5D=&graphType=0&buttonSelection=Compare+Headphones

The SR225 has that typical Grado mid-bass hump and a rise in the high frequences. It has similar frequency response to the MS1 that I have. With the AD700 the treble roll-off I find is very noticable. Insturments like cymbals do not sound as good compared to my Grado/Alessandro MS1. However, the benefit I find with this is that I can wear these for extensive periods without experiencing listener fatigue. They are super comofortable as well. At this price-point there are trade-offs. Going up to the Beyerdynamic DT880 on the other hand, they are really the cats meow.

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne