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Possible explanations for my 'metallic issue'

Following are somethoughts as to what is the root cause of my 'metallic issue'.

1) Its pure and simple the dac (a USB Benchmark).

Pros: I can make it go metallic through 2 digital cables while the
analogue out of the juli@ sails along with no issues @ 192/146.
Remember I can go metallic on the digital out of juli@(running 192/146)
and then w/o rebooting switch over to analogue out and no issue.

Cons: the metallics go away with reboot; use of fd for music files @
192/146 results in no issue; other cmp/cplay users use Benchmark-- they
have reported no issues like mine

2) Its the juli@ drivers that get corrupted

Pros: goes away with reboot, juli@ analogue out does not require drivers
(its all hooked up with hardware on the card)

Cons: Use of fd for music files ok @ 192/146

3) If 2 is true what causes drivers to go corrupt? Could be the processor
which could be what we used to call 'a minus 3 sigma' processor. That
is a processor that is way on the low side of the performance spectrum.

Pros: Explains why higher loaded cpu precipitates problem

Cons: Reboot solves issue for awhile


I guess my next step is to try a dac with 192 capability other than the Benchmark.

Anybody have ideas? I don't want to buy a new dac (costly) or a new soundcard (costly to go Lynx). Buying a new cpu is not too bad $ wise but don't want to do if this not root cause.


Edits: 03/23/09 03/23/09
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