i know nothing on systems

i picked up a sony es... um, it is a cdx-580? it was the cheapest ES at the time, and i'm not bowled over by it or anything. it's got 4v preouts and two sets of them. i guess what i would like to get across is that when i have more money, i'm not buying sony again. nakamichi, alpine, that's pretty much it. maybe pioneer(premier) there's one other that i can't think of, so i guess i won't mention it. the one thing i don't like right now is that the internal gains on the cdx-580 aren't set right, so the volume on the radio/receiver section is much softer than the other settings(cd, chgr, tv). there's my two cents, fwiw... nothing.