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RARE STAX SRM-X Pro? Anyone,any impressions?

post #1 of 12
11/17/12 at 2:51am
Thread Starter 

Dear Forum! Has anyone got any experience with this "portable" amp of STAX? 

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post #2 of 12
11/21/12 at 3:02pm

also curious, just seen one be sold out by eBay today: http://www.ebay.com/itm/STAX-SRD-X-Pro-Kopfhorerverstarker-/121017967761

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post #3 of 12
11/21/12 at 3:05pm

oh my careless! didn't note the difference between SRD-X and SRM-X, forget it :-(

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post #4 of 12
11/22/12 at 1:37pm
Thread Starter 

Yeah, almost the same type name but different technology (the SRM-X is transformerless)

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post #5 of 12
12/1/12 at 2:07pm
Thread Starter 

1000

 

1000

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post #6 of 12
12/1/12 at 2:16pm
Thread Starter 

Here are 2 photos, one showing it's internals that is (to my knowledge) identical to the latter model, the SRM-Xh, but with Normal bias + battery pack connection availability 

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post #7 of 12
12/1/12 at 2:20pm
Thread Starter 

700  Here, we can see the SRM-X Pro with the Bps-600 battery-add-on (right corner)

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post #8 of 12
12/2/12 at 3:43am

It's identical to the SRM-´Xs and some of the earliest SRM-Xs amps but most of them use the far superior circuit found in the modern day amps.  Mosfets as the output are just a very, very bad idea., 

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post #9 of 12
12/2/12 at 5:00am
Thread Starter 

Thank you for your attention.

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post #10 of 12
12/19/12 at 11:31pm
Thread Starter 

HELP!

 

Does anyone know what is the exact type of the potentiometer used on this model,(SRM-X Pro) or its specifications to be able to exchange it to a brand new?

 

 Many thanks!

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post #11 of 12
12/20/12 at 8:21am

The cheap Alps RK16 50K pot is probably what they used.  It certainly was in that style. 

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post #12 of 12
12/20/12 at 11:45pm
Thread Starter 

Thanks! I have the amp but I cannot open it since Ive just atteched some new stick-on bumpers on the screws at the bottom:-)
 

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Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › RARE STAX SRM-X Pro? Anyone,any impressions?