The Grandio SP-07 is the latest wire from Zonotone (Released mid-2026) and takes its cues from Zonotone’s two flagships - the richness and density of the Shupreme and the vivid expression of the original Grandio, and adds the company’s newest conductor material, HiFC high-functionality copper. Five materials: Ultra High Purity 7N Copper (7NCu), PCUHD Wire, OFC C1011, tin-coated OFC and high-purity OFC. These are blended in different diameters to Zonotone’s golden ratio. Each polarity is a DMHC-Duo assembly: six insulated hybrid cores arranged around a central solid conductor, giving 3.0sq (7-core) × 2 of aggregate copper. High-purity polyethylene insulation, an aluminium wrap shield and two hollow PE air-damping pipes sit under a PVC sheath and tough two-colour nylon braid. Lively, articulate and high in resolution — comfortable driving anything from stand-mounts to near-full-size monitors.
Key specs (from Zonotone)
- Conductors: ultrapure 7NCu, PCUHD Wire, OFC C1011, tin-coated OFC and high-purity OFC. Five-material golden-ratio hybrid.
- Structure: DMHC-Duo, fully independent 7-core per polarity
- Conductor size: 3.0sq (7-core) × 2
- Insulation: high-purity polyethylene
- Shield: aluminium wrap; damping: 2 × hollow PE air pipes
- Jacket: PVC sheath + two-colour nylon braid, outer diameter 16 mm
- Terminations: Zonotone LUGB-5.5Rh banana, LUGY-5.5Rh spade or LUGV-5.5Rh pin
Pairs well with our speaker cables range, and Japanese Audio Cables: A No-Nonsense Buyer's Guide is worth a read for the background.
