JohnSwenson;670155 Wrote: 
> Thats not normal, that sounds like what happens to some DACs when the
> internal buffer underflows and it "laps itself" in the internal buffer.
> I know exactly what you are hearing, I've heard it myself with DACs I've
> built myself when things weren't quite working right. 
> 
> Do you know anything about the USB input? Is it asynchronous? What
> sample  rates does it support? What USB chip does it use?
> 
> Thanks,
> 
> John S.

It's a UAC3553B chip, which I think supports sync and async according
to a spec I found.
http://www.chipfind.ru/datasheet/pdf/micronas/uac3553b.pdf
I believe it also says it supports up to 48kHz sample rate (though I'm
more familiar with sample rate as expressed in Kbps so I'm not sure if
this is equivalent).


-- 
n0rb3rt
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