Entreq Micro Ground Box Ex-Demo What a Ground Box Does Noise in a hi-fi system doesn't only travel through the signal path. It accumulates in the chassis and ground lines of components, and conventional mains earthing does little to drain it effectively. Entreq's approach is to provide an alternative, low-impedance path to a carefully constructed passive sink — a box packed with a proprietary mineral mix, copper, aluminium and oak — that absorbs and dissipates that noise without introducing anything back into the system. The Micro uses the Primer box as its model: a single-cell design with one 3.5mm jack inlet, intended for desktop setups, entry-level systems, monitors, and televisions. It is honest about what it is — a starting point, not a whole-system solution. Connect it to one component, and let it do its work quietly. Materials and Construction Entreq build their ground boxes from oak, a mineral mix, copper and aluminium. These are not arbitrary choices — each material is selected for its specific properties in absorbing and dissipating electrical noise. The Micro is compact and unobtrusive: 170mm long, 70mm wide, 70mm tall, and weighing 1kg. It will sit discreetly on a desktop or equipment shelf without demanding attention. What's Included Technical Specifications Connections 1 × 3.5mm jack inlet Effective Mass 6kg Length 170mm Width 70mm Height 70mm Weight 1kg Materials Oak, Mineral Mix, Copper, Aluminium Who Is It For? The Micro Ground Box suits anyone running a desktop system, a compact stereo, or a television setup who wants to explore what passive grounding can do without a significant outlay. It connects to one component — a DAC, a streaming device, a television — and works most effectively on components up to 6kg. If you are already committed to Entreq's approach and want to ground a full system, the Entreq Pluton or Entreq Protectus will serve you better. But as an introduction to what Entreq do, the Micro is the right place to start. It is worth noting that no Entreq ground box replaces protective mains earthing. They work alongside your existing earth, not instead of it. Buying from Martins Hi-Fi Martins Hi-Fi has been in Norwich since 1968. Elizabeth Gould runs the business today, and we stock only brands we have heard properly and stand behind. We have heard Entreq products in our Norwich showroom across a range of systems, and the effect — particularly on digital sources — is consistent enough that we are confident recommending them. If you would like to discuss whether the Micro Ground Box is the right starting point for your setup, or whether something further up the Entreq range would serve you better, we are happy to talk it through. When you get in touch, you'll be speaking with Dave, Chris and Tim — experienced specialists who can advise on this product and your whole system. Contact us at [email protected], call 01603 627010, or WhatsApp on 07554 687137. You can read more about how we work on our Why Martins Hi-Fi page. We are at 85–91 Ber Street, Norwich, NR1 3EY.
