The name Shure alone stands for its long time professional heritage and live components. So I was intrigued before listening. 
 
I listened to at least 5 different music tracks and three different sources (including my usual jds headphone amp).
I got consistent impressions this is a not in your face type of headphone. While it convey the sounds in a non offensive neutral manner, I can't say it is accurate in terms of dynamics in the lows or high registers.
When connected to a Pioneer amp, it became evidently a bit harsh in the high register.
 
The built quality seemed decent but for the asking price, I think the SRH940 could have done better.

I had the opportunity to listen to this at length against some other similar priced gears.
 
After pairing my device, it magically struck me WOW!
 
As I tried a number of music tracks , it became apparent the deep bass was almost one note and somewhat disjointed with the upper registers. Maybe this was part of the concert effect?   So I tried it again with another device I had but it had the same effect.  Mind you, I was rather impressed with its smoothness and lack of harshness with clean recorded material even at loud levels.
 
But the one note deep bass and high frequencies were a bit too much at the end. 
 
Perhaps the HP beats laptop and Dell XPS we tested with were not compatible for this beautiful headset???

I managed to try this MDR-Ma900 against others in the same shop. 
 
The comfort and ergonomics of this Sony are very good.
 
Initially, I was pleasantly surprised how nice it sounded. 
 
But after a longer listen I realized there seems to be grains and slight harshness especially the violins and mid upper registers.
 
I compared the same track and different music to be sure and the same graininess was there.
 
At this price and time of writing, I think there are better models out there with better highs than this. 

I tried this twice with different devices. It sounds pretty good with big bass sounds and probably suit a lot of youngsters today.
 
Many very young people that I know prefer Beats or something similar with the gadgets they owned.
 
 
But if you owned a dedicated audiophile amplifier, forget this and test it with something else. !