ODAC Troubleshooting
Feb 11, 2015 at 10:59 AM Thread Starter Post #1 of 3

chromicant

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I currently have a JDS Labs C5 and ODAC combo. The amp & a Sansa Clip+ have been serving me very well on my travels. Now that I'm back in the office (a craptacular Dell laptop docking station setup), I'm moving back to my ODAC setup on Windows + Foobar 2000.
 
When I was setting things up the other day, I noticed quite a bit of noise (hissy/fuzzy - not quite the static from an untuned radio, but close) from the ODAC + C5 after plugging in the ODAC. I started troubleshooting a bit  - plug the amp into the Clip - no noise. Then I just tried 2 different pairs of headphones - both the same noise. On real careful listening, I think I could hear very faint clock pings. Moved the ODAC to my Nexus 5 + OTG USB cable - and more clock-y noise. Also seen on 2 different USB cables. Also, the noise is heard on my desktop (completely different internals), and even checked the ODAC PCB board. No smell of escaped magic smoke.
 
I don't ever remember this on the ODAC before, so my question is:
 
1) Have people heard this before? On searching, I've see some references here and there but no real conclusions. I remember my ODAC being really quiet. But again, I can't remember what I had for breakfast yesterday. I thought the ODAC had some internals to isolate itself from the computer.
 
2) I'm trying to find a powered USB hub - have people found this to work well with isolating the ODAC to prevent noise?
 
3) Is my ODAC giving up the ghost? Is it time to look for new options? Not that it still plays sound - just with a #@$# hiss that has a faint click when things are silent - enough to drive me batty a bit.
 
Feb 11, 2015 at 3:26 PM Post #2 of 3
Hmmm...doesn't sound good, but I don't know.

You might try asking in the ODAC thread: http://www.head-fi.org/t/611778/brief-odac-impressions/1965. Many owners follow it and might have an idea.
 
Feb 11, 2015 at 3:30 PM Post #3 of 3
I wonder if its RFI from either your cell phone or wifi?  I get weird digital (low level) static-ey sounds from my Earmax tube amp when its within a foot of either my macbook or iPhone.
 

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