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USB Audio Recorder PRO (UAPP): 24- and 32-bit playback, ubiquitous USB audio support for Android

Discussion in 'Portable Source Gear' started by nztechfreak, Feb 5, 2014.
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  1. BowWazoo
    Why do I get two different sampling rates even though bit-perfect is enabled?

    Screenshot_20190806-091943_USB Audio Player PRO.jpg
     
  2. Davy Wentzler
    Because the MQA decoder always outputs 88.2 or 96kHz.
     
    SoFGR and BowWazoo like this.
  3. sakt1moko
    Hi again.

    Ive got some new questions about how AUPP works.
    On the same song, with 2 different phones:

    This one is from a Xiaomi Mix, mqa encoder purchase
    [​IMG]

    This is from a LGv30

    [​IMG]

    Why the direct changes?
    Why the LG dont have the blue light?

    Probably this question is already a thousand time answered, but I cant find any clues about this
     
  4. Davy Wentzler
    http://www.extreamsd.com/index.php/mqa
     
  5. sakt1moko
    Last edited: Aug 6, 2019
  6. scottm18
    Boy...If Davy could do that he would give many. many people have an early Xmas present. That's a dumbly-implemented hardware lock from LG that no software can override....no doubt put in place mostly to letigiously protect from idiot users setting high impedance amp mode, then using 8ohm high sensitivity headphones and blowing out their ears. it's been in place since the V10 so obviously they aren't going to change the policy anytime soon...
     
    Last edited: Aug 6, 2019
  7. Davy Wentzler
    The MQA renderer always outputs 176.4 or 192kHz
     
  8. BowWazoo
    I got a another question:

    Im using a AQ Cobalt DAC on a Note9.

    After reading this, I am confused:

    "When a DAC is detected that implements an MQA decoder (for example, the Meridian Explorer 2 or the DAC inside certain LG models), the MQA decoder inside USB Audio Player PRO is deactivated and MQA decoding is performed by the hardware. No green or blue led will be displayed in the app in this situation."

    because with me depending on Track, the green, or red LED is on...?!
     
  9. Davy Wentzler
    You don't have a LG and you don't have a DAC that can decode MQA. The Dragonflies are MQA renderer's, not decoders. Therefore, they are a perfect fit to UAPP where UAPP does the decoding and the DF the rendering.
     
    BowWazoo likes this.
  10. BowWazoo
    OK, thanks.

    could you please summarize the optimal audio settings that ensure the best sound quality?
     
  11. Davy Wentzler
    Just set bit-perfect to 'On, when possible'.
     
    BowWazoo likes this.
  12. Toshu
    In this configuration, the DF would still be limited to output at 96khz, is that correct? Or...with the UAPP app it can out put higher that 96??
     
  13. Davy Wentzler
    I thought that too for a long time, but the DAC inside the DF can do higher than 96kHz. So what happens is that you see 88.2 or 96kHz inside UAPP, UAPP sends the MQA decoded audio to the DF, which still contains info for the MQA renderer, then the MQA renderer inside the DF unfolds it further to a higher sample rate. Unfortunately we cannot query that rate, but if the corresponding led color lights up on the DF, you will know it is rendering to higher sample rates.
     
  14. Starfinder
    Hi uapp newbie here looking for settings advice.

    When I play mqa tidal music files I get different direct and file settings displayed

    E.g. 88khz direct. 44khz file.

    Does this means the file is playing incorrectly?

    If so what should I do to correct it.

    LG v20 tidal uapp mqa plugin

    Thanks
     
    Last edited: Aug 6, 2019
  15. Larethio
    I recently got root on my v35 but im having trouble locating where to set HiM to always in the mixer paths file. Maybe UaPP can have a root-only HiM switch option?
     
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