Ohhh yes they are worth it. I've experimented with power cords for a number of years. I have recently purchased a Poiema 3 power cord from Ridge Street Audio. I found this cord to have made the most significant improvement in sound reproduction of ANY component, interconnect, speaker cable, speaker or power cord that has ever been in my system. I am so impressed by it's performance that I am in the process of writing a review on it. Like live music? This cord gives it to you. Like the utmost in details? This cord gives it to you. Like thundering, precisely defined bass? Ditto. Robert (the manufacturer) is a genius. I truly cannot say enough good things about his products.