Schiit Bifrost MB technical measurements

Discussion in 'Source Measurements' started by atomicbob, Oct 14, 2015.

  1. atomicbob

    atomicbob dScope Yoda

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    The data presented were acquired as follows:

    1. PrismSound dScope III, picoscope 5243B
    2. DAC unbalanced output RCA
    3. 100 Kohm load used for measurements
    4. 44.1 KHz sample rate, 24 bit depth
    5. USB input – Audioquest Forest
    6. Toslink input - generic toslink optical cable
    7. Unbalance cable DH Labs Silver Sonic Air Matrix RCA
    8. Vaunix Lab Brick USB hub

    Bifrost MB - AD5547CRUZ resistor multibit 16 bit resolution DAC
    Measurements were performed over a period of 1 to 5 hrs of DAC power on time.

    Notable highlights:

    Excellent channel matching, even in the distortion measurements
    Jitter is close, though not quite as excellent, as Gungnir MB
    Short listening evaluation to note the multibit magic of dimension and depth present
    Incedible performance
    for a 16 bit resolution DAC

    USB input measurements:

    Frequency Response
    20151013 Bifrost MB SE FR - USB.PNG

    Frequency Response (y-axis zoom)
    20151013 Bifrost MB SE FR y axis highly zoomed - USB.PNG

    Dynamic Range
    20151013 Bifrost MB SE dynamic range - USB.PNG

    THD+N
    20151013 Bifrost MB SE THD THD+N - USB.PNG

    IMD
    20151013 Bifrost MB SE IMD - USB.PNG

    Crosstalk
    20151013 Bifrost MB SE crosstalk - USB.PNG

    Inferred Jitter
    20151013 Bifrost MB SE inferred jitter - USB.PNG

    Inferred Jitter (x axis zoom)
    20151013 Bifrost MB SE inferred jitter - 2KHz BW - USB.PNG

    1kHz @ -70dBFS
    20151013 Bifrost MB SE 1KHz -70 dBFS - USB.PNG

    1kHz @ -90dBFS (remember - this is a 16 bit DAC not 24 bits - the channel matching is excellent even at this level)
    20151013 Bifrost MB SE 1KHz -90 dBFS - USB.PNG
     
    Last edited: Oct 14, 2015
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  2. atomicbob

    atomicbob dScope Yoda

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    USB measurements part B

    1 kHz gain linearity
    20151013 Bifrost MB SE 1KHz gain linearity - USB.PNG

    Imaging
    20151013 Bifrost MB SE imaging - USB.PNG

    20 Hz square wave 0dBFS 6Vpp 10mS/div
    20151013 Bifrost MB SE 20 Hz sqr 6 Vpp 10mS div - USB.PNG

    20 Hz square wave 0dBFS 6Vpp 500uS/div
    20151013 Bifrost MB SE 20 Hz sqr 6 Vpp 500uS div - USB.PNG

    20 Hz square wave 0dBFS 6Vpp 100uS/div
    20151013 Bifrost MB SE 20 Hz sqr 6 Vpp 100uS div - USB.PNG

    Test setup
    IMG_0916a.jpg
     
    Last edited: Oct 14, 2015
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  3. atomicbob

    atomicbob dScope Yoda

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    Toslink input measurements:

    Frequency Response
    20151013 Bifrost MB SE FR - toslink.PNG

    Frequency Response (y-axis zoom)
    20151013 Bifrost MB SE FR y axis highly zoomed - toslink.PNG

    Dynamic Range
    20151013 Bifrost MB SE dynamic range - toslink.PNG

    THD+N
    20151013 Bifrost MB SE THD THD+N - toslink.PNG

    IMD
    20151013 Bifrost MB SE IMD - toslink.PNG

    Crosstalk
    20151013 Bifrost MB SE crosstalk - toslink.PNG

    Inferred Jitter
    20151013 Bifrost MB inferred jitter - toslink.PNG

    Inferred Jitter (x axis zoom)
    20151013 Bifrost MB inferred jitter - 2KHz BW - toslink.PNG

    1kHz @ -70dBFS
    20151013 Bifrost MB SE 1KHz -70 dBFS - toslink.PNG

    1kHz @ -90dBFS
    20151013 Bifrost MB SE 1KHz -90 dBFS - toslink.PNG
     
    Last edited: Oct 14, 2015
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  4. atomicbob

    atomicbob dScope Yoda

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    Toslink measurements part B:

    1 kHz gain linearity
    20151013 Bifrost MB SE 1KHz gain linearity - toslink.PNG

    Imaging
    20151013 Bifrost MB SE imaging - toslink.PNG
     
    Last edited: Oct 14, 2015
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  5. atomicbob

    atomicbob dScope Yoda

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    reserved.
     
  6. The Alchemist

    The Alchemist MOT: Schiit - Here to help!

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    thank you for the measurements atomicbob!
     

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