Why not just buy some nice clean used copies of the ELO LPs you desire - they're common enough and for the most part sound pretty good too. While they may not be the last word in extension or detail, I find them quite musically involving - an artifact I'm sure whatever over-zealous knob twiddler they find to "remaster" (an oxymoron if there ever was one) the LPs will promptly dispose of in favor of hi-fi wizardry.
There ought to be a Hippocratic Oath that audio engineers, and particularly mastering engineers are sworn to: Do No Harm.
There ought to be a Hippocratic Oath that audio engineers, and particularly mastering engineers are sworn to: Do No Harm.