I've owned an Audioquest DM 1000 cartridge demagnetizer for many years. I believe that Jonathan Carr of Lyra designed it, and if that's true, it might be worth using.
Did I hear an improvement after using it? Well, not in my present system.
What kind of burn in gizmo was in Tima's photo? I have an old "Duotech cable enhancer". Would that work to burn in a Kondo cable on a Kuzma 4 point 7? I understand that those cables arrive partially burned in.