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barry_g

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  1. Thanks very much John for a thorough and understandable explanation.
  2. John, could you explain why you say this? It seems that 96K sampling @ 24 bits, 2 channels will easily be handled with 12Mbps mode. My math says it is only 4.7Mbps. But if the Focusrite specifies USB 2.0, as opposed to USB 1.1, does that imply it exceeds the 12Mbps mode? thanks!
  3. As I already indicated, the USB audio interface is listed in Device Manager as if it's fully functioning. However, it does not show up in Windows Sound and does not show up in Audio Applications as an audio device.
  4. Thanks for the suggestion but I don't think that will have an effect on 60hz hum.
  5. I'm using a Focusrite Scarlett 2i2 USB audio interface to connect microphone audio to the computer for processing (Audiomulch/Ozone 5) and then output through the Focusrite to a radio transmitter. There's audible 60hz hum on the audio at the transmitter. I've been unable to tame the hum via better grounding, use of balanced connection, etc. I'd prefer to isolate the USB port and only use an audio isolation transformer as a last resort. I purchased a ADMU4160 based isolator supposedly rated at 350ma (Focusrite draws 310ma). I've been unable to get Windows applications or Windows Sound to recognize my Focusrite when it's connected through this isolator, even though it shows up fine in Device Manager. I've also gone through a reinstall of the driver with no change. So I'm wondering if anybody might have some advice on how to resolve the issue with the Focusrite/isolator not being recognized as an available soundcard by Windows applications. Also, can anyone recommend an alternate usb isolation product that would work reliably under Windows? Thanks for any help.
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