Will power conditioning really help?

Wow thanks for the replies.

BigJoe- I actually do not know what kind of sound/problem occur in relation to power.

Only real reason I am considering this is mainly due to the building I live in. It's 95 years old in the bronx, NYC. Always have had power issue, surges etc. I mean the breaker that serves my room also serves 5 outlets and 4 light switches. The wires are so old that they have fabric insulation instead of what you see in normal BX cable. All this must compromise something no.

Also the fact that I connect both my computer system/audio t.v must have an effect on the sound I am hearing no? I am pretty much in the same boat as Clio09.

I don't plan to buy one anytime soon especially considering the good ones cost 700+. If there were some in the 200 dollar range that would do anything I would consider it. What I do plan to do is finish modding my SB2 and getting a better power supply and upgrading my amp pretty soon. I hear to much background hiss in my music. Don't know if this is related to the amp or source. Thanks guys.

Here's a question do I need a plain power conditioner or a conditioner with filters. My place so old I don't even know if we have common ground built into the building.