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177 Posts
Discussion Starter · #1 ·

I just got a keces151 USB dac, hooked it up like this:

Dell desktop> USB k151 mk2 > arcam a65 > speakers and headphones

when I hooked it up last night I put on headphones and cranked the volume with no music playing to see the noise floor. The a65 is noisy and mediocre as a headphone amp but I digress....

with vol near max, mixed in with the noise I heard tsk, tsk, tsk... Confused I listened closer and could make out a hiphop melody and then commercials and then more hiphop.

Yes, my pc USB seems to be picking up FM radio!

Turning off the pc, unplugging the USB, or switching inputs on the amp all

make the radio stop.

My Dell and keces DAC are both USB only, so what can I do to isolate the USB signal? I don't want to go spdif so is there any USB transit that might eliminate it?
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