I'm in an older building and have to float all my grounds as I've only got 2-prong outlets. Since I recently started using a high-end power strip I've been getting shocks that feel like pins & needles when I unhook positive RCA connections from my preamp and sometimes my DAC(volume is down and amp is turned off). Nothing fatal but is this potentially harmful to me or my equipment? Should I unplug everything when I change connections? Sorry to diverge from the main question but it seems related. Thanks.
Tim
Tim