Hidiamond Diamond 9 Speaker

The HiDiamond Diamond 9 Speaker cables have been positively reviewed by various sources, including the Italian magazine Suono. In the July 2024 issue, the technical sophistication of these cables is highlighted, which use HiDiamond's proprietary UP-4VRC, Ultra Pure Single Crystal Copper^© (UP-SCC 4VRC) technology. This process involves treating the copper four times to reduce resistance, inductance and capacitance, while the addition of graphite improves noise rejection.

The sound quality is considered highly neutral, with a complete representation of the entire frequency spectrum. The cables manage to maintain a clean and colorless signal, giving the instruments a sense of presence and physicality and ensuring accurate reproduction of drums, guitars and vocals. Bass performance is described as fast and deep without exaggeration, which may not appeal to those who prefer a more pronounced low-end. Overall, Diamond 9 cables are praised for their transparency and ability to bring out natural details in an audio recording.