For my ears, in my room, with my system ... YES !!
I replaced the stock power cords of both my Rogue Audio Cronus amplifier and my Rotel RCD-1072 deck with Signal Cable upgraded power cords (less than $ 100 each), and have noticed an improvement.
I replaced the stock power cords of both my Rogue Audio Cronus amplifier and my Rotel RCD-1072 deck with Signal Cable upgraded power cords (less than $ 100 each), and have noticed an improvement.