Hey folks,
From memory I think OPT gives you the option to disable/enable charging while plugged in to eliminate ground noise.
Ah, thanks
In my experience, it doesn’t make much difference to the ground loop noise. Only real way to eliminate this is to actually pull the USB-cord out.
I use this option to not confuse my battery with endless charge on/off action.
But I’m not sure if this really helps…
In my experience, it doesn't make much difference to the ground loop noise. Only real way to eliminate this is to actually pull the USB-cord out.
a cheap ground loop isolator will eliminate the noise completely too, if u need to keep the USB plugged in
Yeah, but not all USB isolators provide power, only data. Especially cheap ones I’m guessing? If that’s the case, it makes no practical difference to putting the unit into OPT mode.
i’m using an audio ground loop isolator w/ 1/8" input and output.
I have a cheap USB isolator somewhere. I’ll check if it transfers power and report back tomorrow.
the ones i’ve seen only limit the amount of power it can supply. like 200mA max or something.
Okay, as promised I’ve tested it with my cheap AliExpress sourced USB galvanic isolator. I think I’ve paid around € 9,- for it delivered.