Well, thanks for all the input, and yes, my rack is metal and I usually touch it before touching any component, since all of them are metal cased, but in this case, wife wanted to watch TV next room...so she just went straight for the metal knob!!!
I tried many things, in fact I am using a very nice Power Sequencer Conditioner Digital Power Supply Controller Regulator w/ Voltage Readout, Surge Protector, which turns on and off all components on a timed sequence, so I still wonder how come this static thing happens, I don't recall if the Freya has a 3 prong plug or two, if its two, probably I need to reverse the connection on it. Another thing, yesterday I tried using the remote and I was able to pump up the volume higher than with the knob, maybe to its real max, but not sure because as I lowered down again, I was not able to repeat the event, it went back to my 30% as with the knob, so this "relay" technology is strange, or it was applied to this model without enough testing or research on it.
I emailed Schiit, and since I am not the original owner, they said rate may start with a simple $50 fix or a $350 board swap, I am still wanting to open the damn thing and see if there's a way to locally get it fixed, I still think this may be a design fault, the grounding of the unit and its components, since this is the first generation model (not the +).