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Why is it in anyway strange, audio equipment being able to receive at any given bit rate and then resample it is absolutely standard. Nothing strange in anyway about the Edifiers being able to accept 24/194 even if the eventual output is not that bitrate.
I didn say/mean downsampling as such is strange, though it is in the context you've described. but I've read in to your post that you meant to say that the Edifier would play at 24/192 bitrates, which it doesn't.
I've just read your posts since page 132 a 2nd time ... Maybe a problem of non-native language at both sides, maybe it was meant to be read like that?
OTOH, the WIIM, which in my opinion is an excellent product (pricewise, from the mix of hardware/software and their idea of serving key markets), can't support every other unit/use case, and may be in fact not made for your personal purpose.
That doesn't mean that your Edifier product works flawlessly with 192/24 files. It just doesn't do bit perfect reproduction.
It would be less of a problem, if the manufacturer announces the bitrate at which it will be downsampled for reproduction with both speakers..
In fact it could mean, that feeding it bit perfect in the transfer rate of the kleernet chip and avoiding another digital conversíon step may save you money with your streaming service subscription or with the shopping cart, at i.e. Qobuz.
Perhaps you are satisfied with the SQ you'll get through the downsampling process, than everything is easy, and returning the for-you-non-functional WIIM is exactly what's needed.