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Old 18th March 2004, 08:49 AM   #1
August is offline August  Netherlands
diyAudio Member
Join Date: Jan 2004
Location: Utrecht
Default Cyrus dAD7 defect

I've had this toploader with a CDM 9 transport since quite a while, but since recently it is having some problems.

The digital output still works fine with my dCS upsampler and DAC, but for non-critical listening I use the normal outputs. This player has been modified by me some time ago. I removed the muting transistors, replaced the output caps with Audyn, the power supply caps with OS-Con and the output RCA's with WBT.

The sound level from the internal DAC is lower and distorted, especially the lower frequencies. My own guess is the opamps...

Any ideas? I can give some more details once I know where to look.
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Old 23rd March 2004, 07:56 AM   #2
August is offline August  Netherlands
diyAudio Member
Join Date: Jan 2004
Location: Utrecht
The opamps used are OP275GP. Any ideas?
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