Thoughts on a bunch of DACs (and why delta-sigma kinda sucks, just to get you to think about stuff)
Jan 14, 2015 at 1:22 PM Post #2,176 of 6,500
  ACSS = essentially a gimmick. It matters a tiny bit, but overall implementation of the gear in question will trump interconnect method. ACSS was nonsense that Krell cooked up and AGD adopted to keep customers staying in the same family of products for pheer of "Oh no, it doesn't have ACSS. The interconnect distortion will make things worse music!" Yeah right. I've known way too many people who've gotten worked up on the ACSS / Krell current output thing and stuck with it far too long.

 
ACSS is no gimmick.  Of course analog circuit implementation matters most, but ACSS maintains the current driven signal transmission in current loop design amplification topology (like Krell and a-gd) between components instead of converting to voltage driven output for interconnection, and all the signal impedance matching that implies.  And if you think that cable and connector impedance matching little matters, then there's not much point in pursuing this conversation.
 
Jan 14, 2015 at 1:42 PM Post #2,177 of 6,500
Which begs the questIon: If you are going to be living/working on a deserted island with nothing but your entire music collection, and you can only have one DAC, headphone, amp, which one will it be?

Hugo?
wink.gif

 
Well, considering the quality of the available power supply, battery driven gear for sure.
 
Jan 14, 2015 at 2:23 PM Post #2,178 of 6,500
   
ACSS is no gimmick.  Of course analog circuit implementation matters most, but ACSS maintains the current driven signal transmission in current loop design amplification topology (like Krell and a-gd) between components instead of converting to voltage driven output for interconnection, and all the signal impedance matching that implies.  And if you think that cable and connector impedance matching little matters, then there's not much point in pursuing this conversation.

And how important is that interconnect next to the actual amplifier topology / implementation?
 
Sure, it's great to have an interconnect that guarantees the crappy sound of a crappy amp is not deteriorated in the transmission 
rolleyes.gif
 
 
Jan 14, 2015 at 2:45 PM Post #2,180 of 6,500
  Hello people, what are the most competitive DAC's around the £250 mark that can handle 24bit/192KHz recordings? Thanks

 
24/192 through USB ?
 
Jan 14, 2015 at 3:39 PM Post #2,182 of 6,500
  And how important is that interconnect next to the actual amplifier topology / implementation?
 
Sure, it's great to have an interconnect that guarantees the crappy sound of a crappy amp is not deteriorated in the transmission 
rolleyes.gif

 
"Crappy" component evaluations are entirely subjective, IMO.  I happen to like my Krell amp.  And cable discussions are stratospheric around here, if you haven't yet noticed.
 
Jan 14, 2015 at 4:28 PM Post #2,183 of 6,500
   
"Crappy" component evaluations are entirely subjective, IMO.  I happen to like my Krell amp.  And cable discussions are stratospheric around here, if you haven't yet noticed.

That was not the point.
 
The point is how significant or insignificant this transmission technology is next to the actual performance of the amp and whatever it is connected to.
 
Jan 14, 2015 at 4:32 PM Post #2,184 of 6,500
It all counts, or haven't you been paying attention to the audiophilic obsessions? 
wink.gif

 
Seriously, I'm coming under the impression that cable impedance mismatching, and in particular non-nodal destructive signal reflections, significantly degrades sound quality discernable to the listener.  It can account for audible differences in digital cables.  And no, I'm not interested in further discourse.
 
All of this is avoided, at least in the analog realm, by current controlled signal transmission, i.e. ACSS and similar interconnects.
 
Jan 14, 2015 at 5:13 PM Post #2,185 of 6,500
 
Seriously, I'm coming under the impression that cable impedance mismatching, and in particular non-nodal destructive signal reflections, significantly degrades sound quality discernable to the listener.  It can account for audible differences in digital cables.  And no, I'm not interested in further discourse.
 
All of this is avoided, at least in the analog realm, by current controlled signal transmission, i.e. ACSS and similar interconnects.

 
This is the reason I have stuck with ACSS in my system.  That and the fact that it outperformed xlr to my ears.
 
Jan 14, 2015 at 5:49 PM Post #2,186 of 6,500
Some may find ACSS thin sounding(lack of body,warm) or laid back but some find it very pleasant to listen to and more resolving.
 
Master 9 with XLR vs Master 9 with ACSS  is a different kind of sound. XLR is more aggressive.
 
Jan 14, 2015 at 6:03 PM Post #2,187 of 6,500
Looks like ESS Tech just released bunch of DAC chips:
 
more details here:
http://www.esstech.com/index.php?p=products_DAC
 
 
ESS SABRE 9018AQ2M (which replaces the ES9018K2M)
 
Dynamic range improved to 129db vs 127db(K2M)
with special SLIMbus

 
http://www.esstech.com/PDF/SABRE9018AQ2M%20PB%20v0.5%20141212.pdf
 
 
As well as SABRE9006AS(upgrade of ES9006S)
http://www.esstech.com/PDF/SABRE9006A%20PB%20v0.4%20140916.pdf
 
 
Also note in the PDF, ESS new company motto seem to be "Analog Reinvented"
 
The question is, how does one reinvent "analog"? Sigma-Delta "Approximation"? Randomly assign multiple dac output to randomize quantization noise to fool the ears?? Oversampling to the MHz? hmm...
 
Jan 14, 2015 at 6:52 PM Post #2,188 of 6,500
   
Also note in the PDF, ESS new company motto seem to be "Analog Reinvented"
 
The question is, how does one reinvent "analog"? Sigma-Delta "Approximation"? Randomly assign multiple dac output to randomize quantization noise to fool the ears?? Oversampling to the MHz? hmm...

 
No, just marketing hype...
 
Jan 14, 2015 at 7:08 PM Post #2,190 of 6,500
  Haha, just reading over those again is awesome. Sorrodje is one of the smoothest trolls I've seen. I hope estreeter comes back in with some more fun.
 
How does the older Gungnir compare to newer DACs that are 2-3x as expensive and classified as being in Schiit's Yggsdrail tier? That's a very good question.

 
Sorrodje does take a lot of this very, very seriously - he's not just here to keep idle minds amused while you wait for yggdrasil  :wink:
 
Let's ignore Hugo and every other d-s design out there for a moment - given what purrin has written this is Yggdrasil's natural competition regardless of the price differential:
 
http://www.audiostream.com/content/totaldac-d1-dual-dac
 
12K USD might as well be 120K for many of us, but sections of that review are eerily similar to the impressions given here and in the Yggy thread re the Schiit DAC's sonic prowess:
 
The thing I'd like most to convey about the D1-Dual DAC is what may seem like a contradictory set of values. It is at once fluid, very fully voiced in terms of a lovely and rich timbral palette, while also delivering a truly amazing level of detail. Even though I almost hate to say it, I heard things, important musical things, from recordings I thought I knew all too well that I've never heard before. Things like drum sticks hitting cymbals and the resultant rush of sound where the distinction between these events was conveyed with an uncanny exactness that I've heard get completely lost with other DACs. It's as if the Totaldac is able to pull more musical information from the sound file and deliver it in a more exacting manner while also sounding completely natural and without stripping away one ounce of tonal character. And that's pretty special in my experience.
 
It's worth noting that, up to this point, Lavorgna was convinced that DSD was the only way to fly - the totaldac re-aligned his thinking about Redbook. It's a similar beast to Yggy in that any repairs will require shipping back to the point of origin - in this case, France - making ownership a serious investment, albeit not as serious as the monobloc D1 server also reviewed on Audiostream, but that takes us even further from the Yggy's 2300USD sticker. I believe the MSB offerings - particularly their Analog DAC - have already been discussed here, but atm this is the R2R wildcard for mine:
 
http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/phasure-nos1a-digital-analogue-converter-review-or-experience-22305/
 
Another one-man operation, another return-to-Europe repair proposition, but the people who've heard it seem every bit as evangelical as purrin is about Yggdrasil. The stumbling block for me - purchase price and RTB issues aside - is that this DAC seems tied to PeterSt's playback software for best results and that's the kind of lock-in that most of us wont be happy with. The designer's thinking on digital audio seems to line up brilliantly with some of the hardcore fanatics on the CA site and those guys live to tweak everything from the hardware to the OS : if Mike's DAC offers us one thing, its the prospect of being able to plug the thing into the transport of our choice and just start listening to music. For $2300 plus shipping and taxes. With a warranty honored by an established company in the US. And a designer who has an extraordinary grasp of the English language.
 
I didnt start this as an attempt to write an endorsement for a DAC I've never even heard, but Benny-x's query does contain some interesting wording:
 
classified as being in Schiit's Yggsdrail tier
 
Unless I'm missing something, that would be the vintage R2R DACs and the two European offerings discussed above. '2-3 times the price' immediately excludes the ultra high-end stuff from people like MSB, Light Harmonic and dCS - I'd love to hear all of them but I'm not too fussed about comparisons between statement audio and something which will cost less than the top Macbook Pro which - as luck would have it - is what I'm currently using to type this overly long post whilst listening to some music via the - shock, horror - Chord Hugo. That sort of dedication will not go unpunished. 
 
http://store.apple.com/us/buy-mac/macbook-pro 
 
In summary, unless purrin and Mike have done a very effective snow job, the vast majority of DACs on the market are built around a fundamentally flawed design principle, delta-sigma modulation. Rule a line through those and you're left with either the seriously expensive and/or the seriously quirky. I'm all for comparisons - flawed designs or no - but if what has been typed here re highly-regarded DACs like the Auralic Vega is even vaguely accurate, the comparisons should focus on the other R2R offerings. Apologies for the length of this post - just my two cents worth and others may have a completely different take on it. I'm confident that the usual suspects on CA will want comparisons with the totaldac and phasure offerings - fine and dandy, but there is more to buying specialist audio than opening the box and plugging it in. 
 

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