This is 'Digital' version of the 02+odac combo from Head n' Hifi, its only input is USB.
Im pretty sure the noise is coming from the USB input on the combo which is connected to my PC. If I unplug the power adapter from the combo and just have it connected with USB the noise is exactly the same, I believe the ODAC is running solely on USB power while the power input is just for the O2 amp... this eliminates the headphone amp as the problem.... which is odd because I didnt expect there to be any issues using the ODAC with a hifi.
Headphones are completely unaffected, no noise at all... only happens with the hifi.
its digital noise, like really inconsistent sounding noise; changes in tone constantly, a not smooth hum or buzz and cuts out now and again for a second, its definitely some sort of data stream thats getting amplified. I can hear it through my hifi on all channels and even when the volume is at zero.
I have all the devices in the chain connected to power strip in one wall socket so it dont think its a grounding issue...
do you guys have any ideas what the problem might be?
EDIT: Im not sure the cause of this problem but I think I may have a simple potential fix... slicing open the USB cable and connecting an external 5V supply to the USBs power wires for the ODAC.... well this would be the easiest way if it will work but IM sure there are better but more complicated/expensive ways to fix this.
Im pretty sure the noise is coming from the USB input on the combo which is connected to my PC. If I unplug the power adapter from the combo and just have it connected with USB the noise is exactly the same, I believe the ODAC is running solely on USB power while the power input is just for the O2 amp... this eliminates the headphone amp as the problem.... which is odd because I didnt expect there to be any issues using the ODAC with a hifi.
Headphones are completely unaffected, no noise at all... only happens with the hifi.
its digital noise, like really inconsistent sounding noise; changes in tone constantly, a not smooth hum or buzz and cuts out now and again for a second, its definitely some sort of data stream thats getting amplified. I can hear it through my hifi on all channels and even when the volume is at zero.
I have all the devices in the chain connected to power strip in one wall socket so it dont think its a grounding issue...
do you guys have any ideas what the problem might be?
EDIT: Im not sure the cause of this problem but I think I may have a simple potential fix... slicing open the USB cable and connecting an external 5V supply to the USBs power wires for the ODAC.... well this would be the easiest way if it will work but IM sure there are better but more complicated/expensive ways to fix this.
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