The Stax thread (New)

[DaveBSC]

Quote:

The SR-009 has been on my head for most of the day. It's a very, very impressive creation. It really gets out of the way and lets the music come through almost exactly as recorded, without imbuing much in the way of its own qualities to it. Detail level and imaging are staggering, on par with any of the hyper-detail champs like the Qualia, while retaining a balanced sound that makes it imminently more listenable with a wider variety of music. Factor in the solid build quality, gorgeous aesthetic, wear-comfort... and you get my vote for all-around "best headphone in the world" right now.

From a tiny company worth 1.5mil. Amazing. Audio-Technica, Sony and Sennheiser quit that market long ago, and I think no one else save for Audeze has the guts to even try to make a $3-5K headphone. A $5K Ultrasone would just be the same driver in an EVEN MOAR SHINY enclosure.
 

 

[MuppetFace]

I should add that I've been using the KGSS with these. I'll be trying them out with an SRM-717 as well some time soon.

 

[milosz]

Quote:

I know for a fact that the amount is far higher than that.  Why are people relying on online translation services for simple math?  
 
 

According to Tyll's article the sale price was $1,546,989.82.  ($1.5 million)  Spritzer, do you have contrary info?

 

[MuppetFace]

Question.
 
I have an SRM-717 here, and I'm noticing a faint hum with both the SR-007mk1 and SR-507. When I touch the casing of the SRM-717, the hum seems to stop. When I unplug the stats, it gets louder and persists until I discharge them with my finger.
 
Is this a grounding issue? How might I fix this? I'm swapping out the interconnects and trying a different outlet to see if it helps.
 
I should add I'm using a step down transformer.

 

[MuppetFace]

Well, nothing seems to be fixing the hum. Honestly it's not bothersome in terms of interfering with music. But is it harmful to my 'stats? That louder buzz when I unplug them from the amp is what has me worried in particular. So long as it's not harming them though I can live with it.

 

[DaveBSC]

Quote:

Well, nothing seems to be fixing the hum. Honestly it's not bothersome in terms of interfering with music. But is it harmful to my 'stats? That louder buzz when I unplug them from the amp is what has me worried in particular. So long as it's not harming them though I can live with it.

 
Have you tried floating the ground? It sounds like a grounding issue to me, either with the transformer or the amp.
 
 

 

[n3rdling]

You're saying the hum is coming from the chassis and not through the audio signal right?  Sounds like a transformer issue, maybe not screwed in tightly.

 

[Michgelsen]

I am familiar with this issue. It is indeed a grounding issue as far as I know. What fixed it for me, was connecting a wire from the back of the 717 to a heating pipe to ground the case. There's a little binding post on the back of the amp just for this.
 
Quote:

Question.
 
I have an SRM-717 here, and I'm noticing a faint hum with both the SR-007mk1 and SR-507. When I touch the casing of the SRM-717, the hum seems to stop. When I unplug the stats, it gets louder and persists until I discharge them with my finger.
 
Is this a grounding issue? How might I fix this? I'm swapping out the interconnects and trying a different outlet to see if it helps.
 
I should add I'm using a step down transformer.

 

 

[Don Quichotte]

Quote:

I am familiar with this issue. It is indeed a grounding issue as far as I know. What fixed it for me, was connecting a wire from the back of the 717 to a heating pipe to ground the case. There's a little binding post on the back of the amp just for this.
 


 

Same here with my 313 when I lived in a house without grounded electrical outlets.
 

 

[MuppetFace]

Thanks for your suggestions.
 
The weird thing is, this is the first amp (Stax or otherwise) that has done this. Methinks something was damaged in shipping. I'll try the pipe suggestion.

 

[milosz]

Yes, there is a ground terminal - a screw that you can secure a wire to- on the back of Stax amps.  My guess is it's there for a reason.  I don't think they just felt, gee a ground post would look nice there. I think in some cases they found that hook ups of various sorts resulted in ground / hum issues.
 
Try grounding to a water pipe, or to the screw that holds an outlet plate in place.  The picture shows a green wire connected to the outlet's metal box by trapping the bare copper conductor under the screw.
 
 

 

[MuppetFace]

Quote:

Yes, there is a ground terminal - a screw that you can secure a wire to- on the back of Stax amps.  My guess is it's there for a reason.  I don't think they just felt, gee a ground post would look nice there. I think in some cases they found that hook ups of various sorts resulted in ground / hum issues.
 
Try grounding to a water pipe, or to the screw that holds an outlet plate in place.  The picture shows a green wire connected to the outlet's metal box by trapping the bare copper conductor under the screw.
 
 

Thanks, the screw suggestion is much more convenient than the water pipe, given the layout of my dwelling.
 
And I'm really only perplexed over the hum because I own several other Stax amps that, in the exact same setup, don't hum. 
 

 

[spritzer]

Quote:

According to Tyll's article the sale price was $1,546,989.82.  ($1.5 million)  Spritzer, do you have contrary info?

Let's just say that there is more to the story.  Not much else I can say about it. 
 

 

[TruBrew]

I asked this question not too long ago, and did not get a clear answer. Well I talked to STAX, and thought I would pass this along. If anyone else has the SR-507, and finds the headband uncomfortable. I was informed that it is interchangeable with the ones from the 207, 307, and 407.

 

[HDMan]

I have some bright material, would the GES or the SRM-007/SRM323 be a better choice with the Omega2's?