I'm gonna have to confirm this.  I have a 2012-06 model and I believe there is an imbalance as described in this thread.

Has anyone else perceived a slight channel imbalance on their A900X?  When it comes to bass response, it sometimes seems to be stronger on the left ear cup or perhaps the left ear cup is slightly louder than the right ear cup.  

Quote: I agree to a certain extent.  It can be pretty bright/fatiguing at times, but it's only usually with songs that are already bright to begin with.  Mine have around 100 hours.

Do you guys think the dacs found in ipod touches and toshiba laptops (perhaps laptops in general) should certainly be replaced with something like a schiit modi, fiio e17, etc. ?  I feel like I am not getting about 65-75% capability from my A900X due to my sources.

Initial ATH-A900X Impressions   Introduction:   Picked up the A900X yesterday.  Here are my first impressions after about 5-7 hours of burn in.  I have been listening through my 3rd Gen Ipod Touch and my Toshiba laptop.  I've had the M50s for about 4 years.  Picked up the A900X on ebay...

ATH-WS99 vs ATH-A900X Any feedback would be helpful because I'm in a bit of jam here. Seems like the WS99 has been getting praise left and right for its bass heavy signature with attention to midrange/treble detail/focus. It almost seems too good to be true. I know the A900X will not disappoint...

Quote: To have a powerful, yet unobtrusive low end response is quite important to me.  It is the reason I have not pulled the trigger on the A900X.

This has been a really great thread for me.  I have been searching for a new pair of headphones for quite some time.  I was looking to spend about $300 on a headphone.  So far, the ATH-WS99 sounds like great headphone, especially for someone like myself who's coming from the ATH-M50.  I have...

Can the magni/modi setup be used with an iPod? I apologize if this question has already been answered. Probably goin to use it to run the mad dogs. Anyone have this setup already?

I am in the same predicament.  The A900X seems like the best choice for me at the moment, but the lack of bass presence seems like an issue I wouldn't be able to tolerate.  After viewing this thread, the A900X is no longer the the shining candidate as the Kef M500, PSB M4U 1, and Mad Dog have...

I appreciate all the feedback, everyone. How would you guys compare the A900X to the Sennheiser Momentums? Perhaps the only advantage the Momentums have on the A900X is the bass quantity (punch ,thump, etc.)  Aside from this need, it seems like the A900X is really the headphone I'm looking for...

After browing much of this thread, I'm about to pull the trigger on the a900x.  My final question is whether or not these headphones absolutely necessitate an amplifier?  I will mostly be using the headphones from my laptop and my 3rd gen ipod touch.  I have been using the ath-m50's b/w 3-4...

Bump

Just wondering if these are a step up the a900 and moreover, the m50s. I also apologize in advance if this thread is redundant.   -Thanks for you help.

Don't forget to check out the ATH-M50's.