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  1. #1
    Senior Member pablolie's Avatar
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    Support for 24bit/92/192khz...?

    Is there a wiki somewhere that talks about high HD files are handled?

    Clearly, the SB Touch has a DAC in there that allows it to handle everything up to 92kHz, it seems.

    The other units will ultimately downsample?

    Furthermore, if I play a 24bit/92kHz file via an SB3 that is optically conntected to an external DAC, the file will be passed transparently?

    As I start buying some stuff in higher def it'd be nioce to know exactly what happens where so I can optimize it. Thanks!
    ...pablo
    Server: Virtual Machine (on VMware Workstation) running Ubuntu 18.04 + LMS 7.9.1
    System: SB Touch -optical-> Benchmark DAC2HGC -AnalysisPlus Oval Copper XLR-> NAD M22 Power Amp -AnalysisPlus Black Mesh Oval-> KEF Reference 1
    Other Rooms: 2x SB Boom; 1x SB Radio; 1x SB Classic-> NAD D7050 -> Totem DreamCatcher + Velodyne Minivee Sub
    Computer audio: workstation -USB-> audioengine D1 -> Grado RS1/Shure 1540

  2. #2
    Senior Member agillis's Avatar
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    LMS has logic that knows the max resolution of each player attached to it. If you try to play a file that is higher then the max sample rate of the player LMS will down sample it and send the player a version that is at it's max rate. The Touch can send 24/96 out its SPDIF port unaltered.

    If you want a higher sample rate then 24/96 you'll need to use something like VortexBox player that can support higher sample rates.
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    Lead Developer VortexBox

  3. #3
    Senior Member pablolie's Avatar
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    Quote Originally Posted by agillis View Post
    LMS has logic that knows the max resolution of each player attached to it. If you try to play a file that is higher then the max sample rate of the player LMS will down sample it and send the player a version that is at it's max rate. The Touch can send 24/96 out its SPDIF port unaltered.

    If you want a higher sample rate then 24/96 you'll need to use something like VortexBox player that can support higher sample rates.
    Thanks a lot, that makes a lot of sense.

    I don't think I'll go all the way to 192kHz, it seems 24/88 is plenty... But I'd be interested in others' experiences.

    So an SB3 will be getting a downsampled version from the LMS whether it connects to an external DAC or not? Good to know.
    Last edited by pablolie; 2012-09-13 at 10:29.
    ...pablo
    Server: Virtual Machine (on VMware Workstation) running Ubuntu 18.04 + LMS 7.9.1
    System: SB Touch -optical-> Benchmark DAC2HGC -AnalysisPlus Oval Copper XLR-> NAD M22 Power Amp -AnalysisPlus Black Mesh Oval-> KEF Reference 1
    Other Rooms: 2x SB Boom; 1x SB Radio; 1x SB Classic-> NAD D7050 -> Totem DreamCatcher + Velodyne Minivee Sub
    Computer audio: workstation -USB-> audioengine D1 -> Grado RS1/Shure 1540

  4. #4
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    SB3 supports 44.1 and 48. Natively the Touch supports 44.1, 48, 88.2 and 96. There is an applet for the Touch called EDO (Enhanced Digital Output) which will pass 176.4 and 192 on the digital outs, AND allows you to connect a USB DAC to the Touch and will go up to 192 if the DAC supports that over USB. (There are quite a few DACs that support 192 over S/PDIF coax but not over USB)

    If you try and play a high sample rate file to a player which does not support that rate, the server will resample down to a rate the player does support.

    John S.

  5. #5
    Senior Member Mnyb's Avatar
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    And if you are using sync ,your least capable player sets the limit as all synced players uses the same stream.
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  6. #6

    great information!

    Just got my new Touches. Pretty cool so far.

    Many thanks for this very helpful information:
    "There is an applet for the Touch called EDO (Enhanced Digital Output) which will pass 176.4 and 192 on the digital outs, AND allows you to connect a USB DAC to the Touch and will go up to 192 if the DAC supports that over USB."

    Thanks!

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