I'm no expert (so feel free to chime in, folks), but it's based on the Baxandall tone stack that's often associated with the Ampeg B15. It's no multi-band EQ, but it is an extremely simple, intuitive, and surprisingly capable EQ stack that's known for a sweet, natural tone and a usable mid-freq. hump that can help punch through a mix. I'll be using it with a G&L LB-100 (p-bass on steroids), so I don't need to do a lot of EQ'ing....just enough to add some presence and a little punch with an old school vibe. The Linden should work perfectly to this. If I remember correctly, some engineers were fond of them for recording, too. They sound clear and natural without clouding the up the whole mix.