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Stax Sigma - how many owners are left out there? - Page 7

Poll Results: What's your Sigma model?

This is a multiple choice poll
  • 56% (9)
    Normal Bias 6 Pin
  • 56% (9)
    Pro Bias 5 Pin
  • 18% (3)
    404 Modded Pro Bias with original drivers replaced by Lambda's
16 Total Votes  
post #91 of 103
Quote:
Originally Posted by Jonathan66100 View Post

Hi and sorry for the flood.

 

My Stax Sigma have a flat grey cable compared to the 207 cable. It's normal ?

I had believed understand that the latest version of the Sigma released in 1987 had a flat black cable.

 

The normal bias Sigma had a flat black cable (well the post 1979 units) but this one can turn gray with age.  The Sigma Pro had a brown cable. 

post #92 of 103

Yes it must be that ! Thank You Spritzer.

And thank you anyway Takeanidea : )

 

I would also say that the curve made ​​by Ludovic ( curve of the real ED-1 based on the real schematic of the ED-1 http://www.head-fi.org/t/675545/stax-ed-1-and-ed-5-eqs-emulation ) at a effect for me on the Sigma with convolver DSP ( http://www.hydrogenaudio.org/forums/index.php?showtopic=85106 ) for foobar2000 , maybe because he has the driver of the first Lambdas and this curve was made for the Lambdas pro.
Anyway this curve ( for me ) reduces reverb, makes everything a little more natural and adds to a space between the instruments and enlarged thus the already large soundstage Sigma.

Edited by Jonathan66100 - 8/29/13 at 10:58am
post #93 of 103
Quote:
Originally Posted by Scottsmrnyc View Post

With the Stax SRA 12S Amp- The non pros are deeper, smoother, and clearer.  The Stax Sigma Pros have a higher bias so therefore the highs are accentuated which has very little value to me and probably others.  The Stax Sigma non pros have a lower bias which accentuates the Bass.  I have both Pro and Non Pro.  I like to non pro sound far better. 

I don't know why the pro highs would have little value unless one's high frequency hearing was going. I get worried about mine from time to time but it comes back after I clean the earwax out.

Mostly I listen to the sigma/404 and sigma pro. I keep my sigma normals even though I don't listen to them much. But every time I do, usually on the SRA12S, I am struck by the quality of their sound. They show a certain sweetness that the high bias sets don't have.

I wonder just how much these sets will go for in a few years. They have that rare combination of uniqueness, quality and scarcity.
Edited by edstrelow - 8/31/13 at 12:01am
post #94 of 103
Quote:
Originally Posted by spritzer View Post
 

 

The normal bias Sigma had a flat black cable (well the post 1979 units) but this one can turn gray with age.  The Sigma Pro had a brown cable. 

I have 2 pairs of NB Sigma...

 

Sigma 1 s/no 00366 The cable is round cloth covered black with red specks.

 

Sigma 2 s/no 04768 The cable is flat pvc or other, colour is black.

 

Sigma 1 has a damaged ARC with an iffy looking repair, works fine.

 

Sigma 2 is immaculate like new, boxed with acoustic stand and instruction booklet.

 

Both bought at well below current pricing.

 

I love em.   


Edited by Opethian - 11/3/13 at 10:07am
post #95 of 103

Hi:)
So it is you who have purchased the HEAD acoustics HPS I that was out of service on ebay ?

 

Yes the first sigma have a have a round wire cloth.

When the lambda arrived they updated the cable Sigma with the same as lambda.

 

I dropped my 207 since I got my sigma :$


Edited by Jonathan66100 - 11/3/13 at 10:56am
post #96 of 103
Quote:
Originally Posted by Jonathan66100 View Post
 

Hi:)
So it is you who have purchased the HEAD acoustics HPS I that was out of service on ebay ?

 

Yes the first sigma have a have a round wire cloth.

When the lambda arrived they updated the cable Sigma with the same as lambda.

 

I dropped my 207 since I got my sigma :$

Well spotted. ;)

 

Yes, It is a beautifully put together bit of kit but DOA.

 

I am hoping to find a techy to check it over but all the ones I know are real busy right now.

 

I think / hope it is just a simple PSU fault.

post #97 of 103

I have a number of Stax Sigmas both pro and non pro.  I have one Sigma Pro and four Sigma non Pros. I used to have two more Sigma Pro's but my amp ate them up.  I love listening to my Sigma non pros with my SRA 12S.  I

post #98 of 103

What do you mean by your amp ate them up? Surely you didn't throw them out and kept the parts as spares in case your other Sigma Pro's failed or have a broken part?

post #99 of 103

The amp damaging a Pro bias driver is pretty much impossible.  It simply can't swing that much voltage. 

 

Quote:

Originally Posted by Opethian View Post
 

Well spotted. ;)

 

Yes, It is a beautifully put together bit of kit but DOA.

 

I am hoping to find a techy to check it over but all the ones I know are real busy right now.

 

I think / hope it is just a simple PSU fault.

 

Can  you post some pics of it?  I was tempted but I have way too many amps as it is... :o

post #100 of 103

Normal Bias flat wire Sigma owner reporting in :) 

post #101 of 103

Have good listening : )

post #102 of 103
I quite like it, bringing down 100-200 Hz by a couple of dBs using EQ also helps make the sound more balanced by the way.
post #103 of 103

it's good to know : ) but i  can't verified because I have no sigma now.

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