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Thread: R2R DACs 2017

  1. #31
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  2. #32
    Addicted to Best! sbo6's Avatar
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    Quote Originally Posted by Ric Schultz View Post
    It will be interesting to see how a modded LKS DAC with dual ESS9038 chips in it playing HQPlayer upsampled to 512 compares to some of the expensive R2R DACs. One super way of doing this is to use Ethernet from the computer to a ultracap powered Sonore Rendu, then usb to a ultracap powered modded Singxer SU-1 and then I2S into the DAC.

    This certainly is a fun time for digital.....so many choices! So much to learn.
    Another way would be cut out the middle man and run I2S off the motherboard straight to an I2S input capable DAC.

    Also, yes it is a fun and exciting time, digital is making sonic leaps!
    3x20A circuits | PS Audio PPP | Music PC (HQPlayer w/DEQ, Roon) | AQ Cinnamon CAT7 cable | HDPLex LPSU -> UltraCap LPS-1 -> Sonore Ultrarendu D->D | TotalDAC USB cable | Aqua Hifi Formula DAC | Oppo BDP103 transport | Purity Audio Silver Statement preamp | Wells Audio Innamorata amp | Usher BE20D speakers w/GR Res. upgrades | JL Audio F112 sub | JPS Labs SC3 ICs + Aluminata SCs | Stillpoints, BD cones | Custom birch rack | Fully treated + dedicated 2 channel room (absorption/diffusion)

  3. #33
    Quote Originally Posted by Ric Schultz View Post
    The new $23,000 plus Pacific DAC shown by Lampi has a new "chip" for DtoA conversion. Suppose to be better than previous discrete R2R according to designer. This new "chip" is probably Delta-Sigma. A lot of people who heard the recent demos feel this is a big step up for Lampi......and no R2R.

    Upsampling to DSD512 is hot right now and the new Sabre DACs do this quite well. Several of the R2R jobbies do not do DSD or cannot do DSD512. Sabre's have always had a reputation for DSD playback (some love the Nadac, for instance, and it is nothing but an older ESS DAC with some op amps on the output). If you are doing upsampling to DSD and a great Delta-Sigma DAC like the new ESS9038 can do this in a great way then maybe we don't need R2R?!?

    It will be interesting to see how a modded LKS DAC with dual ESS9038 chips in it playing HQPlayer upsampled to 512 compares to some of the expensive R2R DACs. One super way of doing this is to use Ethernet from the computer to a ultracap powered Sonore Rendu, then usb to a ultracap powered modded Singxer SU-1 and then I2S into the DAC.

    It makes sense to me that really super done R2R would beat most Delta Sigma playing PCM......but DSD? Most Delta Sigma DACs that you can buy have Op Amps on the output and are not done to the same level of refinement as many of the R2R DACs (using discrete circuits, tubes or no output stage). The only 9038 ESS based DACs that I know of that have discrete output stages are Ayre, the LKS and my modded Sonica.

    This certainly is a fun time for digital.....so many choices! So much to learn.
    I think the PACIFIC step up claim is not about chips or R2R, but more about the active triode loading tube circuit and ultra clocks.
    I personally never heard Sabre DSD challenge Lampi chipless on DSD. MSB perhaps and some new chip bypass designs.

    I do take your overall point and agree too. Until rpven otherwise, I like R2R best for PCM and chipless for DSD. I dont like FPGA DSD at all!

  4. #34
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    Yes, there are many things in the Pacific that have been improved. But in both videos of Lukasz talking about it he said the new chip was much better than his old discrete R2R and this is the sound he has been "looking for".

    Those who implement the Sabre DACs usually do it with op amps and other not so great execution. Also the new ESS 9038 is way better sonically than the older 9018 (which is what most have heard and compared to). The Ayre DAC (which has a single ESS9038 and discrete output stage) only does DSD128......what a shame! Everything you do to something affects the sound. Even the type of heatsink mounted on top of the ESS 9038 chip makes a big sonic difference. We shall see what a somewhat tweaky dual mono ESS9038 DAC can do pretty soon when people compare my modded LKS DACs to others. Even the PCM sound from the modded LKS is really good. I have not heard upsampled DSD512 through it but would love to.
    Last edited by Ric Schultz; 12-07-2017 at 03:24 PM.

  5. #35
    Up-sampling doesn't seem to help, with a very good R2R. I'd be surprised if folks here said otherwise. This is a "best" forum isn't it ? Meaning products are so good here, they don't need upgrades, outside grounding. (And maybe the latest Bybee RF-noise killer).

    Ric S. offers a ground-mod and it *is* a great one. Similar to what Empirical is doing -emphasis on hardware vs. software.

  6. #36
    One more -CEC (DAO 3.0).

  7. #37
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    Mojo Audio as well: $5500 single ended and $7500 Balanced

    http://www.mojo-audio.com/digital-to-analog-converters/

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