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Super Ground Cube

A grounding box for the audible reduction of interference in high-end audio systems.

· Three-stage sound tuning for system and room
· Gold-plated WBT connection terminal for spades and banana plugs
· Includes a 1.2 m connection cable, made in-house, with beryllium connectors from Switzerland

Sale price€4.800

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Super Ground Cube – Erdungsbox für HiFi-Systeme von SteinMusic
Super Ground Cube Sale price€4.800

HANDCRAFTED IN GERMANY

Each Super Ground Cube is made in Germany from carefully matched materials and components.

FLEXIBLE TO USE

Connects via a power distributor, wall outlet, or grounded metal point – flexible use throughout the entire audio system.

GREATER CALM IN THE SOUND

Controlled dissipation of interference supports a calmer, deeper, and more natural musical presentation.

Super Ground Cube Erdungsbox mit Anschlusskabel

Dissipation Instead of Grounding

a different approach to a calmer sound

Unlike conventional grounding solutions, the Super Ground Cube does not couple to an already loaded mains earth. It forms its own, quiet reference potential into which selected ground points are specifically dissipated – for a stable, clean electrical environment free of ground loops.

Super Ground Cube Erdungsbox im HiFi-Rack platziert

Connection and Craftsmanship

gold-plated WBT terminal, cable made in-house

For connection, the Super Ground Cube features a gold-plated, low-mass, low-eddy-current WBT terminal for spades and banana plugs. Included is a 1.2-metre, cotton-sheathed cable made in-house on our own winding and braiding machines, fitted with gold-plated beryllium-copper hollow banana plugs from Switzerland.

More Calm for the Music

The Super Ground Cube reduces interference in the audio system and provides greater calm, depth, openness, and a natural musical presentation. The Super Ground Cube is a dedicated grounding element for the audible reduction of interference in high-end audio systems. The result is not an obvious effect, but a sound picture with more order, more inner calm, and a distinctly heightened musical presence. Music appears freer, more colourful, and more natural.

Compared to the Signature version, the Super Ground Cube takes a decisive step further. The presentation gains substance, openness, and expression. Fine structures become easier to follow, spaces feel more defined yet wider, and voices and instruments gain more body and naturalness. Even familiar recordings reveal more information and a stronger musical coherence.

Dissipation Instead of Grounding

Conventional grounding solutions dissipate interference into the mains earth – which is itself often loaded and can bring ground loops and installation issues along with it. The Super Ground Cube takes a different route: the included connection cable links selected ground points in the system to its own, inherently quiet reference potential. Interference is dissipated there specifically, instead of spreading through the household wiring. The result is an electrically stable, clean environment that translates directly into the sound: more timing, clearer tonal colour, more space, and a more coherent musical presentation.

Sound Tuning in Three Stages

A built-in switch lets you adjust the character of the Super Ground Cube to your system across three stages: the middle position provides an open, wide presentation, the upper position adds more warmth, and the lower position adds more substance and density. This allows the effect to be precisely tuned to your system, room, and listening preference.

Installation and Orientation

Installation is simple and flexible. Connect it via a free slot on the power distributor, a wall outlet, or alternatively to a grounded metal point. For optimal effect, we recommend aligning it along the north-south axis.

Frequently Asked Questions about the Super Ground Cube