I am happy to go on record concurring with the necessity of breaking in Morrow cables, as fully and articulately described in the contained literature. With the pair of MA4 Reference interconnects I recently purchased, the process unfolded EXACTLY as it is described. Without repeating all the details, they will sound better at the very beginning, there will be stages of decline in resolution, even some being "difficult to listen." I performed my break in with 48 and 72 hour periods of playing a cd, on repeat, with the volume very low. I even recorded each session on my calendar. You MUST give the cables 400 hours! You will be richly rewarded for your patience, literally - right at the 400 mark. Play on.