Input ground loop hum only when p10 cables or XLR without phantom power are connected
erik_squires Stereophile does all their USB DAC testing with a laptop running from battery power. I think it’s a boneheaded way to test DAC’sWill you please explain why you think that’s "boneheaded?" |
@cleeds I was being a little severe, but I still think it's wrong. If you are testing a device which is often connected to a source of noise, such as a laptop with charger, you should test with that noise, not do everything you can to eliminate it in the test environment. In effect you are denying those manufacturers who go out of their way to eliminate ground loops and digital noise the chance to shine, and putting them on a level playing field with DAC's that don't take the extra effort. |
Nothing is connected to any of the outputs? Correct? The guitar and mike plug directly into the inputs of the Scarlett 2i4? Correct? Are you sure what you are hearing is a hum and not a buzz?
Scarlett 2i4 User Guide Help Centre https://support.focusrite.com/hc/en-gb |
Phantom power? Do you mean engaging the 48V Phantom power button on the Scarlett 2i4 unit? Is the microphone you are using a capacitor (condenser) type? If yes the Phantom Power button should be engaged according to the User Guide of 2i4 unit. ] https://www.youtube.com/watch?v=2M7KejHXr8Y[ . |
