SteinMusic Store
Ground Box: SteinMusic Ground Cube Signature
The Ground Cube Signature is a specialised ground box with no tie to mains earth. It reduces interference potentials in the audio system and delivers a blacker background, finer micro-detail and more natural musical coherence—audible within minutes, with no modification to your components.
What does a ground box do — and why no mains earth?
Instead of shunting noise into an already burdened building earth, the Ground Cube operates without any reference to the mains earth. This lowers the system’s noise floor and reveals more musical information—without spotlighting or emphasising specific frequency ranges.
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
To achieve the perfect sound, SteinMusic places great emphasis on precise craftsmanship and careful development. Each product is made in Germany by experienced craftsmen and technicians who use their extensive know-how to achieve the highest sound quality in our products.
Through a combination of advanced technology and traditional craftsmanship, we strive to provide the best possible listening experience. Our commitment to quality and detail-oriented manufacturing is central to our philosophy of creating audiophile products that meet the highest standards.

Worldwide Shipping: We ship our products worldwide.
- Germany:
- Express: 1-2 business days.
- Standard: 2-4 business days.
- Europe:
- Express: 1-4 business days.
- Standard: 2-8 business days.
- Rest of the World:
- Express: 2-5 business days.
- Standard: 5-13 business days
Shipping costs
The shipping cost for your region will be displayed in the checkout process. Please note that additional duties or import fees may apply and are the responsibility of the customer.
Return Policy
You have 14 days after receiving the goods to test the product and return it if necessary.
