Want to try separates, what to expect.

Ok, I have always had an integrated amp or A/V receiver (briefly) as my main source for amplification. I started with a Lafayette tube amp that was my Granddad's. I have had a few different SS units from the late 70"s and the late 80's. I now an using a very nice Modwright KWI 200. I have this strong urge to try some modestly priced separates. Is this a move that will bring obvious sonic improvement or just subtle improvement. Just thought I would ask for opinions before I jump off that cliff. I'll likely still try it, you know how it goes in this hobby. Thanks, Allen (Mizike)