Hello Dave_b. I sent you an email yesterday asking you how long for burn in of these cables. I just received a pair that I ordered online. I was lucky-got for only 144 plus shipping. I like what I hear so far with less than 24 hours on them. You are so right they are palpable, full sounding and dynamic. Sort of tubey. I have them connected between a Sim Nova cdp and a McIntosh MA6900 integrated. They replaced Chimera Advantage II ic's which are very good ic's. I've been looking for a weightier presentation with better low end but retaining a clean high end. I hope these cables can continue to deliver as they burn in because they are giving me what I was looking for. Right now they sound shockingly good!. Right now they sound as you said, "Holy Mother of the Audio Gods." I recently auditioned 5 different sets of cables from the Cable Company and ended up sending them all back because they couldn't deliver enough of an improvement to replace the Chimeras. (Cardas Neutral Ref, Wireworld Eclipse, MIT Shotgun 3i, Synergistic Research Kaleidoscope Phase 2x and JPS Superconductor 2's. I read your post and decided to give these a try since I have been considering Monster speaker cable. Well with these cables I may just keep the speaker cables I have if they continue to sound this good. I'll try to let you know.