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Airport Express clicking sound

I'm hearing a clicking or popping noise when using my Airport Express. It only happens on very "pure" sounds, like a high trumpet or a high soprano. Perhaps it is occurring other times but I can't hear it then.

I'm going from iTunes on a laptop to the Airport Express, digital out to a DacMagic. I know it's not the DAC, as I burned the same files to CD and played it through a CD player hooked up optically to the DacMagic, and no problems. I also tested the same files going directly from an iPod Touch to the Airport Express.

The only other thing it could be is the router, but I don't have a second router to test with. Any ideas of what's going on?
markhyams

Showing 2 responses by jdoris

jdoris
972 posts
 
Very curious to hear more about a clipping DAC, Steve. I'm getting "skipping" (interrupted signal, different places in songs on different plays) while using my Perfect Wave DAC since upgrading to the MK II board (only with computer as transport, not CDP).

I updated the system, version of iTunes and added memory on MACbook, but problem persists.

Any suggestions appreciated.

John
jdoris
972 posts
 
Thanks Steve!

PSA suggested I approach the skipping as a PC problem, so I: upgraded the system in my MACbook, updated to latest Itunes, put in new memory (8GB), and replaced the external drive on which I store my music. I also did an activity search, to make sure other programs were not running and interfering.

This did not help, nor did swapping out USB cables, so I remained suspicious of the DAC, especially since the problem started when I installed the PWD MKII upgrade.

I therefore obtained another DAC (PSA DL III) and switched it into the system -- that appears to have resolved the problem.

I suspect it is something to do with the USB in to the DAC, since the problem did not occur when I connected a CDP transport via coax.

Curious if you have any further thoughts; I'll be in touch with PSA presently.

John
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