Dedicated power


I'm looking to run a dedicated 30a and dedicated 20a line to my system directly from the fuse box. 
I currently have some florescent lights and some other junk on the line so I'm hoping it will be an improvement. Things sounds like they are straining somewhat when you crank things up. The amp will go on the 30a line and the digital stuff on the 20a. 
Anyone done this and saw improvements? 
mofojo
I did dedicated lines many years ago and got blacker background. But when you say "sounds like they are straining somewhat when you crank things up". Sounds to me your amp might be running out of steam. What's your amp and what speakers are you using and their efficiency?
I'm curious -- I've never heard of a 30A dedicated line, though I've heard of 15 and 20A. Why is 30A needed? 
In many jurisdictions, a 30A line will require a receptacle rated at 30A, and that won't be compatible with the 15A or 20A plug you'll find on your component. In any event, I'm not aware of any amplifier that requires a 30A line.