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Author Topic: Gungnir MultiBit technical measurements  (Read 1944 times)

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mickeyvortex

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Re: Gungnir MultiBit technical measurements
« Reply #10 on: September 26, 2015, 02:46:32 PM »
Quote from: Marvey on September 25, 2015, 11:12:53 PM
Yeah, the 1kHz sine wave at -90db looks mysterious - everything else looks good.

Note increased distortion, especially down toward the bass, with the Jenson XLR-> SE transformers. Not something to worry about, but I suspect a slightly warmer sound from them.
Cool stuff Atomic. Your contribution is limited by my browser's capability.
Marv's notes are interesting. Radial markets a lot of these boxes with sound shaping abilities. I would be very interested in seeing how measurements and sound change between different DI boxes. There seem to be a wide variation in prices as well. I would love to see if it's worth spending more on these. There are passive and active DI boxes as well. How would they differ?
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firev1

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Re: Gungnir MultiBit technical measurements
« Reply #11 on: September 26, 2015, 04:09:35 PM »
Wows excellent stuff atomicbob, damn Gumby is freakishly good. Yeah the low level distortion test at -90dbFS is squaring out the little sine wave.
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ultrabike

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Re: Gungnir MultiBit technical measurements
« Reply #12 on: September 26, 2015, 04:51:46 PM »
Awesome stuff Bob! Thanks! :money:
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atomicbob

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Re: Gungnir MultiBit technical measurements
« Reply #13 on: September 26, 2015, 09:03:05 PM »
Update made concerning 1 KHz -90 dBFS measurements.

I have spent some time listening to both the single ended output and balanced to SE conversion through Jensen transformers on my ZanaDeux SE. I have a slight preference for the XFMR Bal to SE conversion in this setup. The soundstage, 3-D dimension and depth with clarity remain impressive either way. Channel matching, gain linearity and Jitter may be the measurements that most reflect the subjective auditory experience I describe. This is an important DAC development that deserves serious consideration. Everyone should audition the Gungnir MB if possible.
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eddypoon

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Re: Gungnir MultiBit technical measurements
« Reply #14 on: September 26, 2015, 11:11:09 PM »
thank you! 

this is why I love changstar so much.
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atomicbob

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Re: Gungnir MultiBit technical measurements
« Reply #15 on: September 27, 2015, 10:03:13 PM »
Picture of test setup.

I should have used the hot lights but was in a hurry to finish before the next scheduled event on the list by my social program director.


Gungnir MB - dScope - picoscope 5243b




Gungnir MB - dScope - MSD192 for SE measurement setup verification


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