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post #22006 of 24765
Quote:
Originally Posted by Mad Lust Envy View Post

I like how the HE90 is conveniently being sold for the cost of the SR009.

It's not being sold as of yet as the auction is still ongoing and the SR-009 can be had for less than $4k imported from Japan.

 

Quote:
Originally Posted by CDPlayer View Post

Seller has 0 feedback. Hmm. :)

Yeah exactly. I put down my bid earlier today but retracted it as soon as I looked at the sellers trade ratings. 0 feedback and who's to say those pictures aren't ripped off from the internet.

post #22007 of 24765

One thing to note is the Sennheiser logo on the box.  That means it's not one of the later units and a HE90 without an amp is very rare indeed.  Ask the seller to lift up the right side of the hadband to reveal the serial number... 

post #22008 of 24765
Quote:
Originally Posted by spritzer View Post
 
Ask the seller to lift up the right side of the hadband to reveal the serial number... 

Good point.

post #22009 of 24765
Quote:
Originally Posted by rgs9200m View Post

Brightness is a strange animal. Somehow, bad brightness is a form of distortion that is painful and fatiguing,

while a headphone that has very evident and extended treble that is done well is refreshing and can be the best aspect of the phones,

making them so compelling and addictive it takes over my whole concentration.

This is what I hear with my Stax 009s.

 

I have heard "bad brightness" with many different dynamic phone/amp combos in the past that I sold because of this problem.

The 009s actually sound like the treble is more extended and present than the "bad brightness" phones, but it is a good thing, not a bad thing.

 

In fact, I always considered myself brightness-averse, but the 009s changed that, and made me see what a valuable thing clean, clear, natural highs could be,

and that's why I really love my 009s and can listen for hours with zero pain and they draw me in to the music unbelievably. (I just use a humble 007t amp).

I used to have SR007 Mk 1s (with the same amp) and did not find them anywhere near as compelling as the 009s in any way.

Just my 2 cents here.

 

Hmm, I can't exactly compare the 009s to my 007 Mk2.5s, but I would say I have VERY few CD rips that irritate me at all. It might be as I am using a tubed NOS DAC (Audio Note 3.1)

with a tubed pre amp, then into a Stax SRM-717. Not sure. BUT I am getting a sound that is very detailed into the highest registers, no fatigue and killer bass, plus vocal and piano in that awesome tubed midrange. I am thinking, aside from the sonic character of the 007s (dark, deep and fairly forgiving) to the 009s (very linear, detailed and microscopic) the front end source is having such a big effect?

 

At this level of SQ it is going to show up weak links and irritating details like nothing else. In fact I would say Stax headphones are so sensitive to the subtle micro sonics that get lost in a slower, more damped 3 way speaker set up, that the front end becomes the major focus of audio success after you buy your Stax set. And for the 009s which are easier to drive than the 007s, I would say look at your DAC!

 

I would recommend NOS tubed DACs as a great clean, smooth and edge free source for those CDs. I was bored / irritated before I tried NOS DACs, and my Stax were gathering dust.... 

 

 

post #22010 of 24765

All but a select few NOS dac's are very rolled off in the top end plus all the other issues (mostly to do with the output stages).  I had some for fun back in the day but I really fail to see the point of having some of the most revealing transducers in the world only to couple them with less than revealing sources. 

post #22011 of 24765
Quote:
Originally Posted by spritzer View Post

All but a select few NOS dac's are very rolled off in the top end plus all the other issues (mostly to do with the output stages).  I had some for fun back in the day but I really fail to see the point of having some of the most revealing transducers in the world only to couple them with less than revealing sources. 

Sorry Spritzer, I don't agree here. Having had top of the line Meridian and Naim OS DACs and then 2 NOS Audio Note DACS, the treble detail is as good, as extended and as detailed in the NOS DACs. And if we are saying here tubes roll of the treble? Then there are many amps and output stages that don't do that at all.

 

Also you do know Audio Note DACs DON'T use a brickwall filter at 20k or whatever, to take out the so called 'harmfull' sonic shadows. The removal of this filter is another step IMHO and in listening test, that takes 44.1 to another level, as well as NOS. Remember why the manufacturers built OS in the first place, to take out the sonic shadow, and to do that, they HAD to upsample to built a cheap and acceptable filter.

 

In digital you can't create new resolution from a set value, or information that is not already there. I accept 96 or 192 material from good masters is better than RedBook, that is another subject. What I am saying is OS blurs the sonic, and ruins the treble in particular.

 

The other thing I have found, is I prefer R2R type chips in my DACs, (ladder type). It justs sounds better. Delta Sigma sounds steeely, more hi-fi, just plain false. I encourage others out their to go against the masses, don't believe the big manufacturers, and listen to a good NOS DAC with R2R chip set and no filter. I can listen to 96 material on my DAC, so I don't miss the Delta Sigma OS capabilities.

post #22012 of 24765

Upsampling started because Phillips had designed 14bit dac's which was the original CD standard.  With no time to make new chips they upsampled instead.  Arguably a far better ploy than what Sony did back in the day.  It is essential with delta/sigmas to decrease the error rate.  Saying that OS messes up the treble is simply not true though, that's like saying analog has higher resolution than Red Book.  In fact, how could OS do that as it is just a fixed multiplier? 

 

Plenty of DAC's that don't brickwall, in fact many high end dacs play with the brickwall and offer different slopes.  Removing it all together is a bad idea though and substituting for it with passive components is even worse.  That could be just me though as I believe in proper engineering, not hocus-pokus BS.  It's also nice to leave part tolerances out of the equation for unit to unit consistency. 

 

Completely agree that R2R's are superior and the only reason they are all but gone is cost, nothing else.  Even better are non chip based R2R arrays when properly implemented. 

post #22013 of 24765
Quote:
Originally Posted by astrostar59 View Post

Sorry Spritzer, I don't agree here. Having had top of the line Meridian and Naim OS DACs and then 2 NOS Audio Note DACS, the treble detail is as good, as extended and as detailed in the NOS DACs. And if we are saying here tubes roll of the treble? Then there are many amps and output stages that don't do that at all.

Also you do know Audio Note DACs DON'T use a brickwall filter at 20k or whatever, to take out the so called 'harmfull' sonic shadows. The removal of this filter is another step IMHO and in listening test, that takes 44.1 to another level, as well as NOS. Remember why the manufacturers built OS in the first place, to take out the sonic shadow, and to do that, they HAD to upsample to built a cheap and acceptable filter.

In digital you can't create new resolution from a set value, or information that is not already there. I accept 96 or 192 material from good masters is better than RedBook, that is another subject. What I am saying is OS blurs the sonic, and ruins the treble in particular.

The other thing I have found, is I prefer R2R type chips in my DACs, (ladder type). It justs sounds better. Delta Sigma sounds steeely, more hi-fi, just plain false. I encourage others out their to go against the masses, don't believe the big manufacturers, and listen to a good NOS DAC with R2R chip set and no filter. I can listen to 96 material on my DAC, so I don't miss the Delta Sigma OS capabilities.

I agree. When it comes to DACs simplicity is key. That's why I got an Ultra-fi NOS DAC. Only one input, one output, and one frequency(44.1 only). I don't feel that it lacks anything with my STAX, it's endgame for me. biggrin.gif Of course if you are using high-res content it's not really an option.
Edited by MohawkUS - 4/27/13 at 4:08pm
post #22014 of 24765

TDA1543 redface.gif

post #22015 of 24765

The 1541 is a far better chip but the PCM1702 was an utter game changer.  These are left in the dust though by the dCS Ring DAC and the MSB units.  

 

As for simplicity, few parts are not the key to reach that.  The SRM-T2 is one of the most simple amps out there yet has the highest parts count of any headphone amp... ever.  Not that opamps won't out do it in actual parts used...  


Edited by spritzer - 4/27/13 at 5:45pm
post #22016 of 24765

I'm looking at a SRM-T1S, but its coming from Japan so theres a sticker on the back that says "100V ONLY". Is there an internal switch to make it 120V or am I going to have to convert it manually?

post #22017 of 24765
Quote:
Originally Posted by DefQon View Post

TDA1543 redface.gif

 

Check out the treble roll off this guy measures.  10khz -0.5db and drops steeply from there.

I upsample to 96khz with my 4xTDA1543 DACs and don't hear the roll off. 

When talking about these issues, the poster should mention his age.  At 41, I'm sure I'm not hearing the same treble I did when I was 21.

 

http://archimago.blogspot.com/2013/02/measurements-muse-mini-tda1543x4-nos-dac.html

post #22018 of 24765
Quote:
Originally Posted by Veamoth View Post

I'm looking at a SRM-T1S, but its coming from Japan so theres a sticker on the back that says "100V ONLY". Is there an internal switch to make it 120V or am I going to have to convert it manually?

If you are looking at the same one I was looking at bundled with the 404 sig's. Those one's don't have a switch for 117,100, 240v operations the transformer inside is only 100v but I recall remembering KG and spritzer posting a picture while ago that some T1S do have a universal voltage bandai tranny in the circuit hard wired for only 100v with no voltage switch at the back but you can rewire it internally. I could be wrong.

post #22019 of 24765

Yeah thats the one I'm talking about.

And what about a 100-120V step up transformer?

post #22020 of 24765

A step-up transformer will the safest and best route to go.

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