I know the obvious difference being, that a 4-channel mixer would have accses to two more channels and thus be able to have another pair of players connected to it, but is that really all you can do with a 4-channel mixer compared to a 2-channel? I'm a novice, but apparantly this question is so basic that you can't even google on it. Is it just so that its convinient to have 4 channels instead of 2 that you always change cables on to hook up another pair of players whenever you feel to switch from say cd to vinyl? Or is there some more advantages?
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