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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: High frequency jitter in an over $400 DAC posted by dave789 on May 16, 2015 at 12:01:34:
I would return it if it didn't sound good.
The analog noise floor looks to be a little high. I see what looks like a couple of low level sidebands poking out of the noise floor at +/- 1.5KHz and 3KHz. Are these consistent or do they vary from FFT to FFT? Seems like an odd frequency for jitter. There is also a spike down around 400-500Hz, which I assume is random. But on the positive side, it looks to be free of low frequency noise (e.g. power supply) compared to the Mac Mini and Audioengine D1. And I don't see a fourth harmonic.
The measurements aren't great, but aren't terribly alarming either. If it sounds good enough, it is good enough.
Also, there seems to be a 34 KHz noise source in your playback or measurement system that is appearing to varying degrees in the different measurements.
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Follow Ups
- RE: High frequency jitter in an over $400 DAC - Dave_K 07:55:10 05/17/15 (6)
- at different FFT, the sidebands are fluctuating - dave789 15:05:09 05/17/15 (0)
- steady 34kHz tone - dave789 14:35:52 05/17/15 (3)
- RE: steady 34kHz tone - Todd Krieger 20:41:42 05/17/15 (2)
- RE: steady 34kHz tone - dave789 21:38:40 05/17/15 (1)
- RE: steady 34kHz tone - Todd Krieger 01:06:16 05/20/15 (0)
- RE: High frequency jitter in an over $400 DAC - dave789 10:05:42 05/17/15 (0)
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