The humble fuse is a bottleneck for mains voltage flow. Even the most expensive mains amplifier or power cord may be fitted with a 9p fuse, only there as an after thought because it is required under UK safety laws. Replacing the fuses inside your equipment and in your mains plugs will give your system an immediate and noticeable sound quality up-grade, the improvements can often be startling, comparable to up-grading a component, proven by customer feed- backs. Hi-Fi tuning and Isoclean fuses are a must for serious audiophiles.