HiFi-Tuning Supreme⁴ Fuse 10×38 mm with AgAu1 alloy, ceramic body and cryogenic treatment for a refined hi-fi power upgrade. Read more.
The HiFi-Tuning Supreme⁴ Fuse 10×38 mm is a premium fuse aimed at critical listeners who pay close attention to every part of the signal and power path in a serious hi-fi system. Developed as the successor to the well-known Supreme³ special version for use in fuse holders inside control panels, this model sits high in the HiFi-Tuning range and is intended for systems where small electrical refinements can contribute to a more open, natural and organized presentation. It is especially relevant for listeners who value nuance, low-level detail and a convincing sense of space in long listening sessions.
A major part of its appeal lies in the construction. The newly developed fuse wire uses a monocrystalline silver-gold alloy with 99% silver and 1% gold, chosen to further improve conductivity. The body is made from black ceramic, while the end caps use silver-plated OFC copper and receive an ultra-thin layer of 24-carat gold. HiFi-Tuning also applies a computer-controlled cryogenic nitrogen treatment to the complete housing for one week at -196 degrees Celsius. Taken together, these choices are intended to support cleaner current flow and, according to the product concept, can help reveal more dynamics, finer resolution and a more lifelike tonal balance.
In practical use, the Supreme⁴ Fuse 10×38 mm suits carefully assembled audio systems where component synergy, current delivery and background quietness all matter. A Diamond version with a 2 mm diamond is also available; while technically identical, it is presented as offering clearly audible differences in sound quality. At present, both versions are offered only in a 16-amp format. HiFi-Tuning states that these fuses are safety tested in accordance with UL248, and Bernd Ahne recommends pairing them with a suitable fuse holder for best sonic results. Installation remains a specialist task, and all work on electrical systems should be carried out only by a qualified professional. For listeners exploring meaningful finishing touches, this fuse is worth a closer look.
