I have a women freind who's name is DJ Kary, delhites may have heard of her she is pretty renowned. whatever discussion we are doing here abt sound out I had her do all this from past 4 years. when i first bought her a tecra laptop she used to use for all kinds of sound out. but then as she gradually went professional, I bought her a tascam US122 USB sound device which she uses to record live shows & also now sound out from it when needed as it is full ASIO.
To conclude, there is no issue at all with sound out etc. The only small prob one can face is if the studio equipment is not grounded properly & has a current leakage. for that u can buy a small surge supresser to pass the signal from. U can buy these filters from APC site. but there is absolutely no need to freak abt it. Studio equipments to what I have seen till date always use very good quality power inputs from Servos, CVTs etc that feed the already very sensitive sound equipment. This mean complete peace of mind in itself.
hope that helped