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Sony MDR MA900 Impressions Thread - Page 74

post #1096 of 1475

Failed resistor mod update.

 

I took some time last night to see why my MA900 headphones failed. The schematics and pictures posted here were correct on my pair. 

 

The failure issue was that the leads from the board to the voice coil go ABOVE the board NOT THROUGH the board. 

 

So use extreme caution if considering removing the yellow blob of adhesive on the board; that adhesive likely covers the (very delicate) leads.

 

I think the leads go to the outer edge of the board at what appears to be a small "red dot" at the outer circumference of the frame. The wires are are then snaked down towards the voice coil.

 

A few people here recommended soldering @ resistor pads; I think that is wise advice and a much safer alternative than going straight for the leads. 

 

Disassembly confirmed the headphone's overall industrial design is quite good; engineered for efficient production and performance. A lot of foam that will unfortunately deteriorate over time. Definitely not user serviceable. 

 

I will try mod on second pair, which I quite enjoy.

 

Also noted that the leads were glued with a clear adhesive directly to the driver (from outer edge to the coil). That was a surprise.

post #1097 of 1475

I think I may have finally found a pair of already modded MA900s, so if the deal goes through, I will be able to do some side by side comparisons of the modded and unmodded versions soon. I will post my observations on here.

post #1098 of 1475
Please do!
post #1099 of 1475
Quote:
Originally Posted by Trunks159 View Post

Please do!
+1.

Take your time though, no pressure smily_headphones1.gif
post #1100 of 1475
Quote:
Originally Posted by Nirmalanow View Post
 

I think I may have finally found a pair of already modded MA900s, so if the deal goes through, I will be able to do some side by side comparisons of the modded and unmodded versions soon. I will post my observations on here.


As happens around here, I suddenly found a good price on a pair of HD700s and decided to buy them instead....

 

Oh well, I may never know how the mods would have sounded.

 

Anyone interested can get in touch with this member who has the modded Sony's and see if you can work out a deal: http://www.head-fi.org/u/186938/alexloures

post #1101 of 1475

A second recommendation of amp for the MA900:  Matrix mini-i.

 

It is my computer dac/amp and I had not tried the MA900 with until now.  

 

Oh, man!!!  It is as lively and fleshed out as with the Shanling PH300, but the bass is even better.  More texture and depth.

post #1102 of 1475

I just got a pair of open box new HD700s for $530. They sound awesome, but the real surprise is how damn close the MA900s are to the Sennheiser's that retail for 3 times as much. The higher priced headphones do have a higher degree of transparency and the bass is tighter and cleaner, but the MA900s are great. If you like a lot of spaciousness and separation in your headphone sound, these two phones are in the same ballpark. They both also sound especially good with the added features of my iCAN amp. I am not sure if I could live anymore without the enhancements the iCAN brings to the sound.

post #1103 of 1475

Anyone know how comfortable these are with glasses on? I don't like how some headphones squeeze the temple part into my head.

post #1104 of 1475
absolutely comfortable with glasses on
post #1105 of 1475
No problem with glasses at all..
post #1106 of 1475

I got quite interested in the MA900... If anyone would be willing to sell me one (shipping to EU), please let me know :-)

post #1107 of 1475

Just snagged these for 150 on ebay, like new

 

can't wait to try them out

post #1108 of 1475
Prepair to be enlightened.
post #1109 of 1475
Quote:
Originally Posted by Nirmalanow View Post
 

I just got a pair of open box new HD700s for $530. They sound awesome, but the real surprise is how damn close the MA900s are to the Sennheiser's that retail for 3 times as much. The higher priced headphones do have a higher degree of transparency and the bass is tighter and cleaner, but the MA900s are great. If you like a lot of spaciousness and separation in your headphone sound, these two phones are in the same ballpark. They both also sound especially good with the added features of my iCAN amp. I am not sure if I could live anymore without the enhancements the iCAN brings to the sound.

 

Now this is interesting. I am always, always trying to find the drop-in upgrade to the MA900. Try as I might, I can't, except for say the Sennheiser HD650 - which is similar enough to the point where I don't feel it's worth it. How would you compare the HD700 and MA900? Is the HD700 dramatically more treble forward than the MA900?

post #1110 of 1475
FWIR, the HD700 is supposedly quite aggresive on the treble compared to the 650. Considering how mellow the MA900 is in treble which is more like an 650, I dont know how the HD700 would be similar.

Goldenear's graph flr the 700 looks a lot like Innerfidelity's graph. Goldenear graphed the MA900 as well, and is the complete opposite of the 700 up top. So, again, not sure how they can be similar, but graphs don't always indicate what we hear.
Edited by Mad Lust Envy - 3/27/14 at 5:52am
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