What is the difference between both of these?

I am seriously thinking about the 900's.  I am wondering how they compare to the ATH M50.  There is a big price difference and I wonder if they are worth it.

Thanks for the response.  I love my M50, I have no compliants with them at all.  They sound great with the electronic music I listen to, but I am curious.  Are the 900s worth the extra money?   They are like $200 to $250 more than the M50.  Is there just a very small improvement from the M50? ...

I am pleased with my M50, but I am curious about the 900.  Can anyone who has heard both give me a comparison?  There is a significant price difference between the 2.  I am wondering if the pro 900 is worth it over the M50.  I listen to mainly tech house, progressive music.  Thanks.

http://www.musiciansfriend.com/   or   http://www.rmcaudiodirect.com/default.asp     Are either of these stores authorized Ultrasone dealers?  Has anybody had any expereince dealing with either of these places?  Any advice or personal experience would be great.  Thanks.

I have been using my M50s for a few months and absoluetly love them.  They are a steal at their price.  I listen to a lot of Electronica, specifically progressive house, and they sound awesome.  I use them at work, unamped, straight into an ipod and they sound awesome.  I actually look forward...

Quote: No, but I bought them from a person who had barely used them.  They are basically brand new and in mint shape with all the accessories.  They were also bought new from an authorized shop and I have the paperwork as well.  Keep an eye on the for sale section for them ;)

So what does this mean?  Those are the only recognized places in the whole US?  What about online retailers? 

I went to there site but there is no mention of it.  Does anyone know?  Thanks.

Thanks for all the comments guys, but I think I will be selling the HD650.  They sound nice and reveal a lot of detail but I think I will prefer a different sound signature with the type of music I listen to.  I don't want to keep playing with it anymore to get it to sound the way I want.

I also thought the DT700 would have plenty of bass, but trust me, off of the setup I was listening to them through, the bass was very recessed.  Both my HD650 and M50 have a TON more bass.

I just heard the BeyerDynamic DT770 pro 80 ohm headphone.  I heard it at a local guitar center and they plugged it into some kind of complicated mixer that had a headphone port.  The mixer had about a million dials and what not.  Anyways, I really liked the sound but felt it needed to be...

Well guys I wanted to report back.  I have been using my HD650 using my uDac.  It has made a HUGE difference, the HD650's sound very very very nice now.  The difference is very noticible from using the crappy laptop dac to the udac, not a small placebo type thing.  The HD650s reveal a lot more...

Quote:    I don't see it on the Audio Technica's USA site.  I really like the sound of my M50s.  I figured a higher end Audio Technica headphone would sound even better, but retain the same house sound, but if they all sound different then I don't know.  I am amazed how nice the M50's...

MacedonianHero,    Have you tried the T1's with any form of electronic music?  Just curious as to how they would sound.