I can't see any instructions on the very few websites which come up on google.
I did find this though:
Product specifications
specification Since its launch in August of this year, Power House's flagship fever fuse "Zero" has been highly praised by friends from all walks of life and has been unanimously rewarded. The factory has now launched the new Ultimate Audiophile Series Version "Ferrous Fever Series" Zero fuse, which is further improved in design and materials to make the sound effect even higher. If you have any questions or enquiries, please contact us directly. Phone: 2807 1855 Power House Advanced Audio Fuse, successively launched Infinity Power, Infinity Power 2, Classical Silver, and Infinity Power's top-of-the-line IP3, using rare alloys as conductors, high-purity quartz glass tubes, with Pure copper metal cups with different metals on both ends. Each is hand-welded and precision polished. It is then refined and adjusted by the factory's unique program. Finally, it is factory-tested and de-Oxit anti-oxidation treatment. To ensure that each fuse can reach the highest level. Alpha 2000, 8000, 10000 POWER HOUSE is the world's first fever factory, placing ore powder in a fuse tube. Its profit formula is mainly inorganic aluminosilicate. , including more than ten kinds of levy elements. However, the amount of enthalpy placed in the tube is very small, and the naked eye can not detect it. With its own semi-permanent 0.06 microcharge, through the far infrared ray, negative ion energy and micro-charge of ore powder, can equipment The power supply performance is fully improved. The influence of the magnetic field generated by the current through the fuse on the surrounding components is controlled. Absorbs the harmonics in the fuse, making the music more quiet. Reduces the harmonic distortion of the input current memory, effectively increases the power factor, thus ensuring better power supply stability, and improving the performance of the equipment. POWER HOUSE Research team found powder Different sizes have subtle changes to the tone lines and sound fields. Compared with Alpha 2000 and 8000, Alpha 10000 powder is the youngest, the factory recommends using it on the source, but it can also be used according to personal taste to flexibly adjust and adjust your favorite sound. Alpha 10000 when playing the violin, the sound Sorrowful, the strings are clear and slender, the tail sounds soft, the air is full, the harmonics are rich, and it presents a wide sense of space. When the Alpha 8000 listens to the human voice, the mouth shape is high, the throat is swallowed and the sound is clear and fascinating. It is fascinating. Large symphony, wide sound field, very clear details of the sound, Zhan Ci distinct, Alpha 2000 bottom frequency is powerful, bursting sound when the sound is full, quality is ready, full-range stretch is amazing.
Sadly, a degree in electrical and electronic engineering and a lifetime in the power electronics industry doesn't seem to have given me sufficient skills to understand any of this.
I can only suggest trying the fuses both ways and maybe the tail will sound hard if they are in the wrong direction?