I remember hearing or reading (can't remember where), coming from a Boss rep, that you don't add EQ on a Katana, you only substract. When treble/middle/bass are dimed, that's the native EQ of the amp. If you adjust everything at noon, it's not neutral, it's minus 50%. Makes sense to me. Like on a guitar let's say. If you connect the pickup direct to the jack, there's no restriction whatsoever and that pup will give it's 100%. When you insert a pot between pickup and jack, you cut off some frequencies when you dial it back, be it tone or volume. Yes ? So same for a treble (or mid or bass) pot, it doesn't add anything to the native current going through, it substract. Everything is already in there, ready to come out, you just tame it down by turning back knobs. I am discussing this somewhere else and resistance to the concept runs high. What do you say ?