I have one of these along with another card to connect my turntables to my pc and out to a mixer. With just this one hooked up (or both) it has a high pitch sound that keeps sounding like a high high hum.
its coming through the speakers so obviously its passing through the audio genie b/c when i unplug the turntable it keeps humming.. but when i plug it back and just unplug the oout to the mixer which goes to speaker, then it stops.
so its somewhere between the usb to pc or the device itself any help?

n/m i think i got rid of it its real low now prob just signal to noise ratio which is normal

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This message has been edited. Last edited by: Jingles,

Yes I had the same problem what you half to do is go to radio shack or an electronic store and get a noise cancelling device looks like a couple of rca and attched to the wire looks like a c size battery cost is about 20.00 well worth it and its works

Jumping in late.

Were you taking your headphone out of your laptop to your mixer?

What did you get, a matching transformer to make it work?

Personally, I'd have use a direct box, either 2 mono's or a stereo, and preferably active. That should ensure a proper impedence matching. Then again, from the live sound world, we want it all to look like a microphone at the input!

No doubt it was a combination of RF bleed and AC/DC noise creeping into the signal

Not to mention not ADJ brands, but get Furman products to protect your power(and gear!). It helps a LOT with this sort of stuff. I was doing a gig on an air force base(one of 3 I had done there) and going from house direct to anything was a bad thing. Put in the Furman to filter my power and all the RF flying around was nuked and the power was cleaned up.

But if you're going out from an USB device presenting line out(probably -10) to your mixer, you SHOULD be fine, but obviously there's still some electrical issues. Stay on the same power strip with the mixer for the laptop. It helps a lot.