Sokel
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Well ESS sum 1-bit DACs. Maybe something related here.
@Sokel can you followup your PCM96k vs DSD256 with one more comparison
If you upsample to PCM353kHz you will by-pass ESS first stage oversampling - does that help IMD hump ?
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Yep,same mess:That's just their nomenclature for the final 6 or 7-bit thermometer-coded final DAC.
In my experiments the ESS hump phenomen was completely unaffected by sample rate... that was for an asynchronous implementation of ES9038q2m, running on a fixed 100MHz clock for the final DAC. With a synchronous setup of the chip it might be different but I doubt that.
![96000.PNG 96000.PNG](https://audiosciencereview.com/forum/data/attachments/357/357283-85bb29cf9998589f45685cf94c6b39a2.jpg)
96Khz I/O
![352800.PNG 352800.PNG](https://audiosciencereview.com/forum/data/attachments/357/357285-91c2108e845c0bd474acbe7b3751a6a7.jpg)
96Khz/352.8Khz I/O
Only DSD reduces it as shown at my other post.