Introducing our New Ultimate Shd Bees Wax Fuse. We didn't think it could be any better but our New " Ultimate " is world class and then some!. We are now using a push -pull I Core design instead of the single Core and we have upgraded our Black Out powder mixture for a broader noise absorption parameter. The New Ultimate is extremely difficult to build considering we are drilling into both sides of the fuse now, sometimes it takes 1-3 try's to get one good fuse [ lots of labor involved ]. This fuse will give you tighter bass and yet sound relaxed [ very Natural Sounding ] The sound stage will become bigger and deeper, more detailed, better layering, better micro detail but with a relaxed musical presentation. This is not a subtle upgrade from our original SHD fuse which we will be keeping in the line up.For people that have to have the best this is it!.