As an alternative to the recommendations above, I would suggest you try a Volex power cord. I bought two from Newark Electronics for about $15/ea, which I believe is ah, "slightly" cheaper than the Shunyata. This works fine with my ARC amplifier. I have to admit that I only got a very subtle improvement in the sound compared to the stock cord, but the stock cord that came with my ARC was not shielded and generated RFI. The Volex cord is well made and shielded. Many use the Volex as a starter cord for further modifications. Suggest you search the forums here and at audio asylum for further info. The Volex cord was once made by Belden.
