Ground Box: SteinMusic Ground Cube Signature

What does a ground box do — and why no mains earth?

The Ground Cube Signature provides its own quiet reference potential for your audio system. Using the included SteinMusic cable, selected ground points are connected so that interference can flow directly into the Ground Cube.

Unlike conventional solutions, the Ground Cube does not tie into the often “contaminated” mains earth. This keeps hum loops and installation-related issues at bay and creates a stable, clean electrical environment for music playback.

Listening – key effects

Blacker background & micro-detail: longer decays, clearer atmosphere, more low-level information.

Natural coherence: timing, tone and texture lock together without spotlighting.

Sharper imaging & depth: more stable focus on voices/instruments, cleaner layering.

Long-term ease: higher musical density without listening fatigue.

Design & Cable

• Passive, specialised ground element; no mains-earth connection.
• Proprietary 1.2 m SteinMusic cable included: 61 individually insulated strands, cotton braid, gold-plated BeCu hollow bananas, Swiss conductor quality, hand-terminated—developed in-house and braided on our own machines.

Technical data

Size: 130 × 130 × 120 mm

Weight: 1.4 kg

Terminal: gold-plated, accepts spades & bananas

In the box: Ground Cube Signature, 1.2 m in-house cable (see above), clamps