Schiit Modi 1 Measurements. This is a USB powered DAC. No help from weird. It sounds a bit on the lean and grainy side on some PCs. Depends upon quality of USB power. There measurements were taken on my PC instead of laptop. The PC is a bit noisier and has some spikes here and there compared to the laptop.
#1) 1kHz @ -90dBr. Low level signal @ 1kHz vs. noise floor.
#2) 1kHz @ -1dBr. The standard 1kHz measurement with the DAC running at almost max output.
#3) 1kHz @ -1dBr. Same as above, but this time we are taking a close peak at the spectrum below 1kHz.
#4) 19kHz + 20kHz. IMD. Slighter wider band view.
#5) PN white noise. Wide band view to note extension and nature of filter slope.
#6) 1kHz @ -60dBr. Mid level signal.
#7) 19.1kHz. Wide band view.
#8) 700 and 1700Hz two tone. Log x-axis.
Note:
- In graph #4, the -60db 1kHz signal actually has a cleaner spectrum than the -90db signal. I double checked this to make sure.
- In graph #3, the 1kHz signal will look fatter than usual. My PC won't process the FFT window past 32k points consistently unlike my laptop. This measurement is usually done with 131k points which results gives us better frequency resolution.