Quad wrote: 
> I still don't have an optical cable. But I A-B-testet:
> 
> - Touch -> coax -> M51
> - foobar -> HDMI -> M51
> 
> The M51 has one volume control for all inputs and I couldn't measure the
> db-level due to the lack of a pressure meter.
> 
> While these are not optimal double blind conditions, it still is a
> controlled straight forward instantaneous A-B test. My wife switched
> sources for me.
> 
> Unfortunately I can't post a log, but differences are there, easier to
> identify than FLAC vs. 320kbps.
> 
> What could be the reasons for that? I really want to know.

any DSPs turned on in foobar2000 playback? Foobar is using your
computer's soundcard. Any processing going on there? I'm no expert on
HDMI (just use it for connecting things in my AV setup).  But seems that
I've read that some systems using HDMI have some bitrate restrictions,
etc.  Really don't know.  I suspect something with the computer
soundcard in the foobar setup.   (the reason I found squeezeboxes years
ago to replace my foobar2000 on laptop > DAC > stereo was that the
soundcard on my laptop was doing nasty things with my music....wasn't
bit perfect when it arrived at the DAC).


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