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The Headcase Stax thread

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If it passes the Spritzer test, it will have passed the hardest one. 

Good luck!!!!!!!!!!

 

  • Replies 14.4k
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  • bwck2000
    bwck2000

    Arrived yesterday and it really opens up every electrostatic headphone that I own. I was looking for an amp that can bring more bass out of my HE90 than HEV90 so I drained my pocket to bid on this and

  • I have been getting back at this..working up to a limited run of these as the STAX SR-X9000 and Audeze CRBN have made that need to happen. But the chassis is extraordinarily expensive and difficult to

  • Isn't everybody glad that I'm crazy enough to buy this stuff and have Kevin rip it apart?   

Posted Images

On 1/22/2018 at 12:01 AM, vvar10ck said:

Good day everyone! Unfortunately Head-fi topic of Perun was deleted and they're requested for a sponsorship, it's from 1K $ per month and too expencive for us. Feel free to contact me via PM or http://perun.prfi.ru mentioned above.

 

 

_Image00001.jpg

Is that amp your company's amp?  It doesn't seem to be on your website and says "Flux Lab" on it?

7 hours ago, vvar10ck said:

It's KGBH SE (Analog Edition) made by Flux Lab Acoustics.

http://fluxlab-acoustics.com/Products/18

Does this mean the design is still in flux.....:lol:

I looked at the site, but it was all Greek Russian to me.......:ph34r:

Google Translate to the rescue.......;)

Quote

(MODEL DISMISSED / MODEL DISCONTINUED) FLUX LAB KGBH SE Hybrid amplifier for electrostatic headphones

Bodes well......:blink:

Quote

Amplifier for true connoisseurs of music! This model is an evolution of development, already well-proven design of the amplifier for electrostatic headphones - KGBH. The author of the circuit solution is a great enthusiast of electrostatic sound - Kevin Gilmour. Inspired by the legendary STAX SRM-T2 amplifier, he used a similar balanced output stage for electron tubes in his development of a semiconductor amplifier. This made it possible to obtain a high amplitude of the output signal with small distortions and a broad band of sound signal.

This model is assembled with two types of volume control. The basic version of the regulator is a relay type attenuator using signal relays of the Japanese company Fujitsu Takamisawa, in the version of "Analog" - a high-quality attenuator of the transformer type is installed. In the design of the amplifier used attenuators of the English company Sowter, and for switching the terminals of the transformer controller uses a precision galette switch Swiss company Elma.

Also in the configuration with a transformer attenuator, it becomes possible to use this model as a passive preamplifier.
Specifications

    
Band of reproduced frequencies:
      
5Hz-100kHz -0.1dB
      
0Hz-180kHz -3dB
      
10Hz-120kHz -3dB (Analog)
    
Harmonic distortion: <0.01%
    
The amplitude of the output signal is 1600V (peak-peak)
    
Gain: 60dB
    
Standard bias voltage: 580V (Pro)
    
Input connectors: XLR (two inputs), RCA (two inputs)
    
Power supply: AC 230V, 50 / 60Hz
    
Power Consumption: 180W
    
Dimensions: 440mm (W), 325mm (D), 180mm (H) Excluding the height of the lamps.
    
Weight: 16kg

    
Applied electronic lamps in the amplifier:
    
4 things. EL34 (6CA7)

Flux Lab Acoustics © 2009-2018

"Kevin Gilmour" this must be the Cyrillic spelling....... " Кевин Гилмор"...... Sounds moar exotic......:)

Quote

Also in the configuration with a transformer attenuator, it becomes possible to use this model as a passive preamplifier.

How about that, folks, a 180 Watt Passive pre-amp.................:wub:

Edited by wink

53 minutes ago, wink said:

How about that, folks, a 180 Watt Passive pre-amp.................:wub:

Hey you could get there.. just do a normal passive preamp and stick the Megatrons tube complement on top and run the heaters. I mean it would look pretty? right

 

Edit:: OMG I just started imagining the tube rolling options..

Edited by SeaWolf

First off fuck Jude and head-fi, if you really want a good reception for your electrostats, talk to folks who are very intimate with e-stat gear, Birgir (aka spritzer), Kevin and Wachara, if you pass the test and take on feedback for any constructive criticism (feedback) from them, then I'm sure people will like what they will hear. Before any of this happens, you have to cut the bullshit first followed by facts.

Though I have to be honest, the headphones do look kind of cheaply designed and built.

12 minutes ago, DefQon said:

Though I have to be honest, the headphones do look kind of cheaply designed and built.

It's an Perun maker's view. Design conseption is very distinctive and pagan as Perun is old slavic 'God of thunder and lightning'. These headphones are totaly handmade of natural materials as ash tree, and natural skin (lambskin) etc. This design  is antipode of modern 'eco-sh*t-leather' imitation and plastic parts.

I like that you’re using wood for the cup but not a huge fan of the headband used which are reminiscent of the old 60-80’s quadraphonics Japanese and US made headphones.


Sent from my iPhone using Tapatalk

'For the taste and color all felt-tip pens are different for all people'     :^)

 

600x400_0xd42ee42d_18043798501435839529.jpeg

19 minutes ago, DefQon said:

First off fuck Jude and head-fi, if you really want a good reception for your electrostats, talk to folks who are very intimate with e-stat gear, Birgir (aka spritzer), Kevin and Wachara, if you pass the test and take on feedback for any constructive criticism (feedback) from them, then I'm sure people will like what they will hear. Before any of this happens, you have to cut the bullshit first followed by facts.

Though I have to be honest, the headphones do look kind of cheaply designed and built.

Spritzer may seem to be very abrasive at first. But look at what he had to say about the phenomenon libratum on its thread here. He was actually quite complementary about the sound signature. And measured in his criticism of day to day design issues. 

 

He is less measured when fan boys declare it the best thing since sliced bread. That's more on the fan boys than the headphone but may not come across was such.

 

Well, because I am credulous and vulnerable to hype trains (and have been peeping pictures of the drivers) I find myself wanting some L300-LE. Any thoughts about the best way to snag a pair in the UK when available?

If it's just a case of telling a friendly dealer to keep an eye out, that's fine- but if there's a better way, I'm mostly ears.

On 1/24/2018 at 12:59 AM, vvar10ck said:

'For the taste and color all felt-tip pens are different for all people'     :^)

 

600x400_0xd42ee42d_18043798501435839529.jpeg

You can use google translate :tmonk:

Or just use the door.

14 minutes ago, swt61 said:

Or just use the door.

Yeah, the back one

  • 2 weeks later...

With the latest batch of SR-009 headphones (SZ9-4xxx), it seems that Stax has changed the wooden box. So far I've spotted only two sets like that out of dozens.

The question is whether they've tweaked them in any way, or they are exactly the same as before.

sr009box.jpg

That's a good point.  Knowing Stax they might have changed something but I haven't heard anything... 

The imbalance issue is certainly still there though. 

I owned a pair for about 6.5 years, never had an issue with my pair. Funny how some pair are totally unaffected and some had issues. Do we know what the root cause is yet? 

2 hours ago, Audiojunkie said:

I owned a pair for about 6.5 years, never had an issue with my pair. Funny how some pair are totally unaffected and some had issues. Do we know what the root cause is yet? 

 

There are a few parts to this, partially it is charge leakage, partially it is mechanical and finally...it has to be a coating issue as well. 

The "I registered to shill this" update, probably.

(Looks like heavier mesh on the outside, and painted black? Now they look a touch more Abyss/S&M and a bit less like SR-007s)

Edited by Kattefjaes

Still no strain relief on the cables which is not great...

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