Stuart, when I say change the characteristic of the speaker, I mean when you adjust a frequency on the loki, it’s as if yoou change how the speakers is voiced. If you adjust the highest treble knob, you can make your speaker become bright. Your source music never seems to be altered. It is as if the Loki is built in the speakers. That is how good it is. Never thought I would be an EQ in my system. My Mac amp has a built in EQ but I never use it. It never sounds right. The Loki is MUCH better.