Thanks for all the replies guys. I think i found the problem. I live in an apartment, and noticed the situation only happens after around 5pm. Anything earlier and the pod is clear and usable. That makes me think my electrical socket is connected with my neighbors somehow and he must have something plugged in during that time to cause the hiss. I have a furman m-8x2 power conditioner, but that doesnt seem to help the problem. The wall outlet is a 2 prong, so i have to use an adapter because the power supply for the pod pro has a ground. But like i said before a certain time, tthere is no issue of hiss. What else can i use to eliminate the problem?