As a Musical Fidelity kW500 owner. I am using the Isotek power cord from the UK. Check out their website.
I just bought a Purist Audio Aqueous Anniversary for my Nu-vista 300, and it is by far the beste cable I ever heard on a poweramp. And I tried many. It is by far the moste powerfull cable I ever heard. The control is awesome. The middel is so full and musical, and the resolution is also of top quality.
Hi. I live in England and have been a big fan of Musical Fidelity and currently have the KW500.I was very disappionted when I first listened to it but it gradually got better as the hours of use went by. I then replaced the Audience power cord that I was using with a Shunyata Alpha Anaconda and things got dramatically better.Everything seemed to fall into place, the bass tightend up significantly ,sound stage widened.details came through and the sound was more alive. I am no expert but I am delghted with the KW500 and Anaconda combination.Note with the KW 500 you will need a 20amp IEC...this has better current carrying capabilities. As a foot note when I was upgrading the power cord I spoke to Musical Fidelty regarding a power cord and although they were none comital the tech expert said to make sure to use heavy gauge copper and not silver