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Question about amps for the Stax SR-009 - Page 22

post #316 of 711

What, a battle axe isn't the preferred method for metal working?  Color me surprised... biggrin.gif

 

This thread needs more pics though so here is a fully balanced GES. 

 

post #317 of 711
Quote:
Originally Posted by kevin gilmore View Post

There is a person here that thinks that all you really need to design with is a digital voltmeter.

I'm evidently not that good.
I have oscilliscopes (currently 2465a,2465b,2467b,7600 and a tekmeter)
I have signal generators (a few different ones)
I have audio spectrum analyzers (an old hp and an even older tek)
(and tracking generators to go with them)
I have distortion analyzers (the old school kind)
I have time domain reflectometers
And a 3 full size racks of computer blades to do synthesis with.

Seems easier this way.

And a drill press, more soldering irons than i can count, a stereo
microscope to build smt stuff with, and a fadal 3 axis cnc mill.

The way birgir puts large holes in thick pieces of metal scares me.

Yeah that's more like what I had in mind too :-)
post #318 of 711
Quote:
Originally Posted by spritzer View Post

 

 

 

It's basically my version of the WES but this one actually works.  It's also a bit smaller than the GES... redface.gif

 

Birgir,  I understand you've no intentions of going commercial, but I'm sure I've read somewhere that you enjoy building amps for yourself. If that's true, why not sell those amps after you've done with them. 

 

Beautiful amp above BTW.

post #319 of 711
Quote:
Originally Posted by spritzer View Post

Here is the new amp I'm trying to find a name for:

 

 

WESley Snipes.

post #320 of 711
Quote:
Originally Posted by David1961 View Post

 

Birgir,  I understand you've no intentions of going commercial, but I'm sure I've read somewhere that you enjoy building amps for yourself. If that's true, why not sell those amps after you've done with them. 

 

Beautiful amp above BTW.

I second that :-)

post #321 of 711

I do sell some of my amps when I'm done with them but normally I'm just too lazy to bother with that.  redface.gif

post #322 of 711
I'm thinking about upgrading my STAX SRM600, but I'd like to stick with STAX, I'm in UK and don't want to spend 5k for a BHSE or a WES.
To be honest I can't detect any issue in my current amp: no brightness, good timbre, transparency and slam. The 009 still sound a bit 'in the head' compared to the Cavalli LL I had the pleasure to listen.
I could also find a local KGSSHV, but I've got the feeling a SS amp is not a good match for the 009...maybe I'm completely wrong though!
So i'm leaning toward the 007tii, but most of the people seem to prefer the 727. And how does the 717 stack against the other twos.
Thanks
post #323 of 711
Quote:
Originally Posted by realmassy View Post

I'm thinking about upgrading my STAX SRM600, but I'd like to stick with STAX, I'm in UK and don't want to spend 5k for a BHSE or a WES.
To be honest I can't detect any issue in my current amp: no brightness, good timbre, transparency and slam. The 009 still sound a bit 'in the head' compared to the Cavalli LL I had the pleasure to listen.
I could also find a local KGSSHV, but I've got the feeling a SS amp is not a good match for the 009...maybe I'm completely wrong though!
So i'm leaning toward the 007tii, but most of the people seem to prefer the 727. And how does the 717 stack against the other twos.
Thanks

I'm assuming it was IanG's LL you listened to Massi, if so the first time I heard my SR-009's was with Ian's SRM-007t and SRM-717 ( Ian has sold both those amps since then ) and out of the two we both preferred the SRM-717.
However Ian has also heard the SRM-727 ( an amp I haven't heard ) and he told me he liked that amp more than the SRM-717.
If you get in touch with Ian I'm sure he'll give you his thoughts.
post #324 of 711

Hi David,

yes, it was Ian's LL, which was superb with the 009. I'm asked my STAX dealer (Philip at CheshireAudio) to have a demo of the 007t, I should receive it tomorrow or the day after: this should give me an idea another basis for comparison. 

post #325 of 711
Quote:
Originally Posted by realmassy View Post

Hi David,
yes, it was Ian's LL, which was superb with the 009. I'm asked my STAX dealer (Philip at CheshireAudio) to have a demo of the 007t, I should receive it tomorrow or the day after: this should give me an idea another basis for comparison. 

Why don't you ask CheshireAudio if they'll also send you the SRM-717 and 727, then after hearing the three amps close after each other it'll be easier for you to decide which you prefer.
post #326 of 711

Hi.

Those who can understand Spanish, I recommend reading this topic:  http://www.jazzitis.com/foro/viewtopic.php?f=8&t=2383  in Jazzitis (spanish jazz forum)  where several recordings are crushed for the analysis capacity of the Stax SR-009.

 

Set up associated is Linn Majik DS / AudioNote DAC 3.1x / Woo Audio GES /Stax SR-009.

 

Cheers


Edited by Sahara - 7/30/13 at 8:51pm
post #327 of 711
Head-fier realmassy is visiting my place ( Thursday ) to have a listen to my headphone system which includes the BHSE, he's brining his 009's and possibly his SRM 600 ltd which I think would be a good idea.
Not only in bringing his Stax amp would we be able to compare it to my BHSE, but he'll also hear if there are any improvements from the Stax amp using my source. I do believe there will be but I've not heard Massi's headphone setup.
post #328 of 711
Quote:
Originally Posted by David1961 View Post

Quote:
Originally Posted by realmassy View Post

Hi David,
yes, it was Ian's LL, which was superb with the 009. I'm asked my STAX dealer (Philip at CheshireAudio) to have a demo of the 007t, I should receive it tomorrow or the day after: this should give me an idea another basis for comparison. 

Why don't you ask CheshireAudio if they'll also send you the SRM-717 and 727, then after hearing the three amps close after each other it'll be easier for you to decide which you prefer.

 

If CheshireAudio doesn't have NOS, old demo or used STAX amplifiers, these models won't be available.

 

Current STAX amplifiers are (http://www.stax.co.jp/Export/ExportProducts.html):

  • SRM-007tII
  • SRM-727II
  • SRM-006tS
  • SRM-323S
 
Models for the Japanese home market have different model names/numbers, but I believe they are (close to) identical to the export products except for input voltage.
 
According to Spritzer STAX SRM-007t is very similar to SRM-007tII regarding audio circuitry. SRM-007t has both normal and pro bias outputs.
 
I believe the SRM-717 and SRM-727II are (somewhat) more different. Spritzer and Kevin Gilmore have written about this.
 
post #329 of 711

Had dealings with Cheshire audio they do sell old stock recently sold an -007 MK 1 to an Italian. Nice guy Phillip.  There are differences between the 717 and 727- 727-11 no feedback caps like the 717[good] output BJTs on each daughter board different some other BJTs different .Most of the circuit is the same but not all Re-instate the global negative feedback..Lends itself to major mods and sounds MUCH better after mods. I have found several people including myself -round the World have modded the 727-11 all are happy with the result . But I have to say that's with the 007 MK1 not the 009 which might sound better with a tube design. or a SS that is very smooth.Many like the 009 but not me . But its down to personal preference.  

post #330 of 711

You might also like to consider the Stax SRM-T1 valve amplifier as a vintage offering.  There were several iterations of this offering different combinations of inputs and outputs.

I'm fortunate to have one with the Stax Golden Aero valves, and to my ears sounds much better that the modern offerings except perhaps for the Stax T2.  

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