lagoausente
Well-known member
I will power my DIY preamp with batteries, (if all works fine).
There is a pcb mount switch, to lift pin 1 from chassis.
It´s supposed if find ground problems, humms or something like that.
My doubt is, are those noises or ground problems only when using AC psu?, because ground loops from common grounds?
Or could I have ground problems also, if the preamp it´s battery powered?
Or could be just internal ground problems or the own preamp?
Can anyone clear this?
Thanks!
There is a pcb mount switch, to lift pin 1 from chassis.
It´s supposed if find ground problems, humms or something like that.
My doubt is, are those noises or ground problems only when using AC psu?, because ground loops from common grounds?
Or could I have ground problems also, if the preamp it´s battery powered?
Or could be just internal ground problems or the own preamp?
Can anyone clear this?
Thanks!