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The Stax Thread III - Page 203

post #3031 of 11915

Please be careful if you are into DIY. Stax amps carry lethal voltages.

 

IM view. I would seriously check out the insides for damage dude. If the unit is this old you could be faced with more parts needing replacing than worth the hassle.

And if you go ahead and use it without doing anything, you could electrocute yourself and or blow your headphones.

 

What is the logic in buying an older amp may I ask.

post #3032 of 11915
Quote:
Originally Posted by astrostar59 View Post
 

Please be careful if you are into DIY. Stax amps carry lethal voltages.

 

IM view. I would seriously check out the insides for damage dude. If the unit is this old you could be faced with more parts needing replacing than worth the hassle.

And if you go ahead and use it without doing anything, you could electrocute yourself and or blow your headphones.

 

What is the logic in buying an older amp may I ask.

+1. A person I know had a very scary moment during testing with the high voltages.

post #3033 of 11915
yeah, doing the "60 cycle shuffle" is no fun. eek.gif
Edited by bearFNF - 8/31/14 at 8:23am
post #3034 of 11915

Thanks for the concerns, and I am indeed not going to take any risks with this.  And why an old amp? Probably the same reason I own an 1897 upright Steinway & Sons piano. Logic is not a factor in my decision making processes sometimes. Do note that my main amp in my main system is fully refurbished by Parts Connexion (the people behind the original Sonic Frontiers brand), and sound just absolutely amazing with the KT99 Tubes (NOS Yugoslavia KT90A's) it is designed for.

 

My main HeadFi system is my HiFiMan HE 400 powered by a Schiit Asgard 2, so I do have contemporary gear also.  The Stax purchase is just a bit of a gamble, and I'll at least have some fun with it, if even just looking at it (heck, if the amp isn't worth a dime, maybe the headphones are.)

post #3035 of 11915

Can anyone tell me whether there are any differences in construction are between the Lambda Pro and Signature, apart from the thinner diaphragm? Specifically, does the Signature have a grill or foam on the outside side of the earspeaker with a thin layer of wool inside of that? I have a pair of Signatures that must have been modified at some point and currently have nothing to protect the drivers from dust and (presumably) damping the high frequencies a bit (it sounds brighter than the Pro).


Edited by tonereef - 8/31/14 at 5:00pm
post #3036 of 11915
Quote:milosz
 

That's the Stax Mafia walking past one of the output tubes there on the gantry....

 

 

 

How did they get onto the forbidden planet?

post #3037 of 11915
Quote:
Originally Posted by tonereef View Post
 

Can anyone tell me whether there are any differences in construction are between the Lambda Pro and Signature, apart from the thinner diaphragm? Specifically, does the Signature have a grill or foam on the outside side of the earspeaker with a thin layer of wool inside of that? I have a pair of Signatures that must have been modified at some point and currently have nothing to protect the drivers from dust and (presumably) damping the high frequencies a bit (it sounds brighter than the Pro).

That sounds like mine, I think they are stock. No foam or grill on the outside to dampen sound, only that black anoying foam-ish thing they used back then (acoustically transparent).

post #3038 of 11915
Quote:
Originally Posted by tonereef View Post
 

Can anyone tell me whether there are any differences in construction are between the Lambda Pro and Signature, apart from the thinner diaphragm? Specifically, does the Signature have a grill or foam on the outside side of the earspeaker with a thin layer of wool inside of that? I have a pair of Signatures that must have been modified at some point and currently have nothing to protect the drivers from dust and (presumably) damping the high frequencies a bit (it sounds brighter than the Pro).


I believe that the first Lambda pros had mineral wool padding on the outside, as did other Stax of that era, such as the SRX series,  but later models dropped the foam.  Neither my 404 nor  Lambda Nova Signature came with  mineral wool.  BTW I prefer both of these with the outer foam removed too.  It's not as sonically transparent as you might think, and I find the sound more open without it.  Dust protection comes from thin clear plastic on the outsides of the drivers.


Edited by edstrelow - 9/1/14 at 1:55am
post #3039 of 11915
My LS has a woven white net on the outside as dust protection.
post #3040 of 11915

Transformers box (Wee modified / Wee unmodified / Verto / Verto modified) + RKV-II amp versus Stax amp (SRM 727 / SRM 007t2) :

 

Follow here : http://www.homecinema-fr.com/forum/post178230197.html#p178230197

 

post #3041 of 11915

Hi. I recently picked up a lightly used Stax 009 / 007tII Kimik system. It's fed by a Chord Hugo. 

 

I also have a Stax 507 / 323s system which is only a few weeks old. Same source. 

 

Using the Hugo, I can feed both systems and easily compare the two systems by swapping the headsets over. Has anyone else compared the two systems, or similar combinations? I must say, there isn't a huge difference to me. Like I said, it's early days but my first impressions are:

 

- Between the amps, there's a touch more delicacy in the Kimik over the 323s. It also has a warmer sound to my ears, with more bass. However, the 323s seemingly has more drive and sounds faster. The Kimik seems to have a bit more ambience and space, and it's a touch more refined, but the differences are small. 

 

- The 507 seem to have deeper bass than the 009? I can feel it more on the 507, and they have a bit more 'bite' on the higher frequencies, whereas the 009 are softer sounding and more natural. The 507 seem to have a 'harder' overall sound, with a very slight mid/upper bass hump and a slightly harder treble. The benefit is that the 507 seem to have a bit more slam in the drums, and more immediacy all round. The 009 are perhaps a little more realistic in their tone and level of detail. 

 

- The 009 are the comfiest headphones I have ever worn. However, the 507 are also very comfy compared to most headphones. 

 

It would good to hear your experiences with these systems, especially over the longer term. I'm in two minds whether to keep the 009 / Kimik system, as it can be returned to the dealer after a few days. There's a huge difference in price, and there are differences in sonic signature, but it's not so clear as to whether one is better than the other. Any thoughts much appreciated!

post #3042 of 11915
Quote:
Originally Posted by audiokid View Post
 

Hi. I recently picked up a lightly used Stax 009 / 007tII Kimik system. It's fed by a Chord Hugo. 

 

I also have a Stax 507 / 323s system which is only a few weeks old. Same source. 

 

Using the Hugo, I can feed both systems and easily compare the two systems by swapping the headsets over. Has anyone else compared the two systems, or similar combinations? I must say, there isn't a huge difference to me. Like I said, it's early days but my first impressions are:

 

- Between the amps, there's a touch more delicacy in the Kimik over the 323s. It also has a warmer sound to my ears, with more bass. However, the 323s seemingly has more drive and sounds faster. The Kimik seems to have a bit more ambience and space, and it's a touch more refined, but the differences are small. 

 

- The 507 seem to have deeper bass than the 009? I can feel it more on the 507, and they have a bit more 'bite' on the higher frequencies, whereas the 009 are softer sounding and more natural. The 507 seem to have a 'harder' overall sound, with a very slight mid/upper bass hump and a slightly harder treble. The benefit is that the 507 seem to have a bit more slam in the drums, and more immediacy all round. The 009 are perhaps a little more realistic in their tone and level of detail. 

 

- The 009 are the comfiest headphones I have ever worn. However, the 507 are also very comfy compared to most headphones. 

 

It would good to hear your experiences with these systems, especially over the longer term. I'm in two minds whether to keep the 009 / Kimik system, as it can be returned to the dealer after a few days. There's a huge difference in price, and there are differences in sonic signature, but it's not so clear as to whether one is better than the other. Any thoughts much appreciated!

 

It's been awhile since I heard the 507 or 009 (both on normal Stax amps), but I seem to recall fairly significant differences in sound stage. What music/files are you listening to?

 

If you can't appreciate the difference I'm sure your wallet would be happy (and thankful!) :)

post #3043 of 11915

This is most odd! I had the 007s and now have the 009s and the 009s are miles ahead on everything.

 

Before I got a KGSShv to power the 009s (which makes these phones sing for sure) I used the 009s on a Stax 717, which is as good

or better than the current 727, and no doubt better than the 323 partly as the trans are bigger and parts quality higher.

 

The 009s on the 717 was ok, but really revealed the limitations in the source and amp. It was not really that great IMO. When you get a world class revealing headphone like the 009s you are really digging deep into the source and revealing all it's warts and all. I would hazard a guess the extra bass you here on the 507s is bass bloat in the phone. The 009 has KILLER bass when fed a good signal and decent amp.

 

What would I do? I would decline the KimiK amp, keep the 009s and get a KGSShv from Birgir or other source. To me, none of the current Stax amps have the quality or drive to do the 009s justice, sorry. I know this might not be what you wanted to read, but to me it is a fact. I got a DIY KGSShv for £1,700 and it kills any Stax amp. The Stax tube amps are an odd ball design, with weird and flawed current delivery, the 727 has that aweful feedback thing going on, the 323 is built to a budget but not up to the job of the 009s. 

 

If you are really serious about a Stax system, sell the 007s and the 323, decline the Kimik and spend the money realised on a KGSShv DIY, or a WOO WES, Eddie Current or BHSE if the money stretches. There is no Stax amp that you will be happy with for long IMO. BTW I listen to Rock, Dance, Classical, Vocal, it all sounds awesome on the KGSShv with the 009s. I kept my Stax 717 amp for a portable system. It sounds brittle, cold, not real, edgy compared to the KGSShv with the 009s. It has an unatural edge to the treble that gives the perceived idea it has more detail, where the opposite is true. The rest of the Stax amps are the same or behind the 717 IMO. Drop the idea of a Stax amp if you want a top system and keep the 009s! Actually I heard the 507s on the KGSShv and they are very good for the money, but again, way behind the 009s.


Edited by astrostar59 - 9/2/14 at 6:37am
post #3044 of 11915
I'm listening to a range of music, all lossless FLAC files. Includes Nick Drake, Agnes Obel, Fink, Matthew Halsall, some Coltrane etc.
post #3045 of 11915
Quote:
Originally Posted by astrostar59 View Post

This is most odd! I had the 007s and now have the 009s and the 009s are miles ahead on everything.

Before I got a KGSShv to power the 009s (which makes these phones sing for sure) I used the 009s on a Stax 717, which is as good
or better than the current 727, and no doubt better than the 323 partly as the trans are bigger and parts quality higher.

The 009s on the 717 was ok, but really revealed the limitations in the source and amp. It was not really that great IMO. When you get a world class revealing headphone like the 009s you are really digging deep into the source and revealing all it's warts and all. I would hazard a guess the extra bass you here on the 507s is bass bloat in the phone. The 009 has KILLER bass when fed a good signal and decent amp.

What would I do? I would decline the KimiK amp, keep the 009s and get a KGSShv from Birgir or other source. To me, none of the current Stax amps have the quality or drive to do the 009s justice, sorry. I know this might not be what you wanted to read, but to me it is a fact. I got a DIY KGSShv for £1,700 and it kills any Stax amp. The Stax tube amps are an odd ball design, with weird and flawed current delivery, the 727 has that aweful feedback thing going on, the 323 is built to a budget but not up to the job of the 009s. 

If you are really serious about a Stax system, sell the 007s and the 323, decline the Kimik and spend the money realised on a KGSShv DIY, or a WOO WES, Eddie Current or BHSE if the money stretches. There is no Stax amp that you will be happy with for long IMO. BTW I listen to Rock, Dance, Classical, Vocal, it all sounds awesome on the KGSShv with the 009s. I kept my Stax 717 amp for a portable system. It sounds brittle, cold, not real, edgy compared to the KGSShv with the 009s. It has an unatural edge to the treble that gives the perceived idea it has more detail, where the opposite is true. The rest of the Stax amps are the same or behind the 717 IMO. Drop the idea of a Stax amp if you want a top system and keep the 009s! Actually I heard the 507s on the KGSShv and they are very good for the money, but again, way behind the 009s.

Ouch! Will keep listening to the two systems for now, and look into the other options.
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