Aww man, As recent as January of this year, the price of MA900 was hovering around $170~ on amazon and ebay. Now they are almost $300! Is Sony MDR MA900 now officially discontinued? Now I really regret NOT buying a second MA900 so I can experiment with it (removing the resistor, for example)

  7550s is not that expensive if you cross the border http://www.bhphotovideo.com/c/product/758137-REG/Sony_MDR_7550_MDR_7550_Professional_In_Ear_Headphones.html

  Can you do a XBA Z5 vs MDR 7550 (a.k.a. - EX800st) comparison ?

  ex800st http://taiseiko.blog.so-net.ne.jp/2012-02-18 mdr 7550 international http://erji.net/simple/index.php?t1182856.html

  For just 20 more bux you can get EX800ST... brand new. http://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=ex800st&_sacat=0

How does ma900 sound with Foreplay - Long Time by Boston, and how does it compare to MDR Z7 you demo-ed?  

  i forgot the bass test link link, but it's a youtube clip that Lachlan (a_recording) used to to point out the bass flutter issue he had with his MDR Z7 headphone. Thank god my MDR 7550 is flutter-free in the bass region and has good left-right driver matching. the source by the way is...

I ran a bass note test and 24hz is the lowest I can hear (or feel).

  Can you comment on how it sounds with klipsch tips?

Quote:     Quote:     Assuming that MA900 really is the continuation of the mdr f1 heritage.....  MA900 should scale up when fed with 1 watt of class-a power, just like the MDR F1.   http://www.audioreview.com/cat/headphones-home-audio/headphones/sony/mdr-f1/prd_118043_2750crx.aspx  

Any Sony MDR MA900 headphone owners here?   Is Geek Out 1000 an overkill for a headphone with nominal impedance of just 12 ohm like the Sony MDR MA900?

  pls do.   does it fit mdr 7550's nozzle?

    I wonder how MA900 would respond to a 1000mW Class-A amplifier.....   http://www.amazon.com/Geek-Out-1000-Headphone-Amplifier/dp/B00JD0CV3M/ref=sr_1_1?s=electronics&ie=UTF8&qid=1417559379&sr=1-1&keywords=geekout+1000   ... hope I can post my impressions in March 2015! 

  Do you mean missing "hearing all that goodness" of 30-50hz ?   I think that range is meant to be felt... ideally throughout the body...  and not just locally to your head.     ----- also, I think the ma900' sub bass and others like it becomes a non-issue when augmented with SubPac.  In...

  MA900 starts falling off the cliff @ 50hz.... and that's already subwoofer territory.   In the near future I think it would be smart for (open, non-planar) headphone makers to just outsource all that sub bass frequencies to clever devices like this   http://thesubpac.com/

  set up a forwarding service first. http://global.rakuten.com/en/help/service/forwarding.html?l-id=borderless_banner_tenso01

  Just import them for 40 bux http://global.rakuten.com/en/store/e-earphone/item/10005210/

  This must be the first time I read EX800/1000/7550 series as not comfortable.... 7550's long term comfort is the reason I bought them in the first place.

ma900 is designed to be so open (no seal at all...) that I think it's a bit unrealistic to give it leveled subbass without sacrificing other freq ranges.   to those who find sub bass really lacking with open headphones..... http://thesubpac.com/

look no further   http://www.axentwear.com/

Who here switches eartips based on what you want to listen to?   For me, when I want to listen to a music album I use Monster Supertip gels to make the mid-bass less forward; for vocal such as watching TV dramas and anime I use stock hybrid tips.  When it comes to consonant sounds I find both...

   the phones you mentioned above are in the same league in sub bass         If you're referring to post #1538... it's the overall distortion that raises eyebrows.  k7xx better stay around ~$200 with such distortion figures!

  and ma900 also has less erratic distortion and no extreme dip somewhere in the mids than K7xx   K7xx   ma900

Who here is brave enough to buy and plug MA900 with this class-a amp/dac and give us impressions? http://www.lightharmonic.com/download/ces2014press/Documents/Geek_Out_Product_Information.pdf http://www.audiostream.com/content/lh-labs-geek-out-1000-dacheadphone-amplifier

My dream successor or version 2.0 for the MA900.     1.  Retain the design of the MA900 - aluminum grills, magnesium hanger and headband skeleton.   2.  Use MDR Z7 driver, but tune it for linear mids and improved soundstage+depth but not at the expense of "center" image...  also would love...