Mar 30, 2016 at 12:45 AM Post #122 of 167
Any opinion about the K2M ?


This is the low power scaled down version found mainly on portable equipment, one of my  "DAC on a USB stick" has one, it does its job and I have not paid it much attention beyond that.
 
Some manufacturers like Light Harminic use it in some of their DACs
 
May 24, 2016 at 10:01 AM Post #125 of 167
PCM5102 was rather mediocre - worse even than PCM2702 (not PCM2704) in my mostly spider-soldered solution.
I haven't tested PCM5102A yet, but the only difference is that it has a slightly reduced amplitude (lower than 2V RMS), because PCM5102 external +3.3V and internally pump-generated -3.3V voltage was not enough and every PCM5102 (without "A") clips the output at the maximum amplitude.
Maybe PCM5102A is quite OK in a better circuit, but it's not a typical and decent multi-bit, nor even a TI advanced-segment PCM179x (also very good) DAC - it's some sort of delta-sigma as far as I remember.
If you ask my, I will prefer ES9023 than PCM5102A, because I know how good as a chip ES9023 is for a price, but I will probably focus on PCM1794 rather than on ES9018 - "probably" because I have some sort of problem with accepting the way ES9018 sounds in devices I have, connected to high price of the IC and PCM1794 sounds to me more like old, good multi-bit with a decent OS inside.
 
May 24, 2016 at 10:03 AM Post #126 of 167
  PCM5102 was rather mediocre - worse even than PCM2704 in my spider-soldered solution.
I haven't tested PCM5102A yet, but only difference is that it has a slightly reduced amplitude (lower than 2V RMS), because PCM5102 internal pump-supply voltage 3.3V was not enough and every PCM5102 (without "A") is clipping the output at the maximum amplitude.
Maybe PCM5102A is OK in better circuit, but is not a typical and decent multi-bit, nor even a TI advanced-segment (also very good) DAC.

That leaves me with two options, CS4398 and WM8741
 
May 24, 2016 at 10:32 AM Post #127 of 167
Quote:
  That leaves me with two options, CS4398 and WM8741

No, try PCM179x, ES9023 or even PCM5102A better then, because:
  1. CS4398 - could and lifeless to me,
  2. WM8741 and WM8740 - both sounds like broken, even in the best possible circuit - they have a problem with some sort of compression and sound is too dynamic in an artificial way,
and both CS4398 and WM974x still requires more complicated design (even if you use only + or only - V-outputs through capacitor) than chip ES9023 and PCM5102A not giving any better SQ (I'm not talking about any technical advantages described in % or dB, but about the way the music is reproduced).
Maybe the best option for a simple and still good DAC is to use old USB PCM2702 (only this one).
There is also AD1955 which in my opinion is very good, maybe even better than ES9018, taking into the consideration an average SQ of available devices with both ICs.
 
Aug 29, 2016 at 10:43 PM Post #128 of 167
New dual implementation on the radar: https://www.rha-audio.com/us/dacamp/dacamp-l1.html
 
Related thread: http://www.head-fi.org/t/818168/introducing-the-dacamp-l1-flagship-cl1-ceramic-and-cl750-from-rha
 
Not much info yet, but opinions are welcome.
 
Sep 12, 2016 at 9:19 PM Post #129 of 167
  New dual implementation on the radar: https://www.rha-audio.com/us/dacamp/dacamp-l1.html
 
Related thread: http://www.head-fi.org/t/818168/introducing-the-dacamp-l1-flagship-cl1-ceramic-and-cl750-from-rha
 
Not much info yet, but opinions are welcome.


Yes, I'm interested in the L!, but never owning a DAC that used ESS chips, I came to this thread wondering whether there is a distinct tonal quality.
 
Feb 2, 2017 at 9:45 AM Post #130 of 167
I can vouch for the sound quality potential of the Sabre chips. They are truely high end. Better than the pcm 1794. Easier to get absolutely great sound from but great attention must be paid to the following analog section. Full direct coupling & film cap bypasses on analog power supply for opamps is absolutely necessary to get the best out of them. Otherwise they can sound mediocre at best.
 
Feb 6, 2017 at 11:22 AM Post #131 of 167
I can vouch for the sound quality potential of the Sabre chips. They are truely high end. Better than the pcm 1794. Easier to get absolutely great sound from but great attention must be paid to the following analog section. Full direct coupling & film cap bypasses on analog power supply for opamps is absolutely necessary to get the best out of them. Otherwise they can sound mediocre at best.


from the ponoplayer impressions thread, re: how they use the DAC in a circuit design:
 
I recently bought an Aune M1s.  I bought it because (at least by the specs) it had simliar features as the Pono (which I have).  Dual sabre chips in it, balanced output, supposedly very basic UI for sound reasons, no bluetooth or wifi or any doodads like that.  The Aune M1s has been getting some very high praise with comments such as 'sounds better than DAPs costing much more'.  I can say, without a doubt, that the Pono sounds much much better.  The Pono sounds alive and organic.  The M1s does not.  It's mostly in the bass regions where the Pono sounds...real.  Forget about the balanced mode, Pono kicks the Aune's ass.
Another thing, Pono's line out sounds amazing in comparison as well.  Real life, like vinyl.  The Aune sounds compressed and mechanical (not like "real" music).  Just goes to show you that even with good parts and innovation, it's hard to compete with what Ayre came up with with the Pono.

 
Feb 15, 2017 at 7:16 PM Post #132 of 167
I can vouch for the sound quality potential of the Sabre chips. They are truely high end. Better than the pcm 1794. Easier to get absolutely great sound from but great attention must be paid to the following analog section. Full direct coupling & film cap bypasses on analog power supply for opamps is absolutely necessary to get the best out of them. Otherwise they can sound mediocre at best.


They are also much more expensive and are more difficult to implement properly from what I understand.
 
http://www.ti.com/product/pcm1794a/description
 
That is the new version also.
 
The reality is that in all the work taken to do them properly for different channels and stuff you might as well just work on a R2R DAC instead.
 
May 24, 2017 at 5:56 AM Post #133 of 167
May 24, 2017 at 12:55 PM Post #134 of 167
If you're driving your headphones directly out of the unit, get the nicer one with the dedicated headphone amp circuit IMO.
 

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