Your are so right erik_squires.
some of those early U2 Albums are dreadful to listen to even their arguably best Joshua Tree (spelling?) love the music but the eq. on them and compression is horrible.
to the OP. Many on here will turn there heads at tone controls but not all of us have perfect rooms with perfect records. so use them to make it sound best to you. If you don't have an amp with them and think you need them the best rendition i've come across are the ones with cut off Frequency adjustment they will have two extras tone control nobs for quick ID.