Entreq Macro Kit Tungsten Twin Kit - Ground Boxes and Cables

Item code: Entreq Macro Kit Tungsten Twin Kit - Ground Boxes and Cables

The Entreq Macro Box Tungsten Twin Kit provides complete negative speaker terminal grounding for a stereo amplifier, using two independent Macro Box Tungsten units, one per channel. Each box drains accumulated electrical noise from its channel into a…
£860.00
£716.67
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Qty:

SPEAKER CABLES:

A quantity of 2 means you will receive a pair of speaker cables e.g. for your front left and front right speakers. By entering a quantity of 1, you will get a cable for a single speaker e.g. centre speaker and this option also enables you to vary the length (and termination) of your cable for each speaker.

OTHER CABLES:

A quantity of 1 means you will receive a single cable in the case of aerial, satellite, subwoofer, digital coaxial & optical cables and a pair of cables in the case of 2 rca to 2 rca analogue audio cables.

NON-CABLE PRODUCTS:

A quantity of 1 means you will receive 1 of the specified products.

£716.67 ex. VAT
Available — built to order, dispatches in 24 hours
Delivery: Royal Mail Tracked 24 FREE  ·  DPD Next Day from £8.95  ·  DPD Saturday from £12.95
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Our promise: 30-day returns · Free burn-in · Built in our UK workshop · Lifetime warranty · Expert support on every order

Entreq Macro Kit Tungsten Twin Kit - Ground Boxes and Cables

 

The Entreq Macro Box Tungsten Twin Kit is built specifically for negative speaker terminal grounding, widely regarded as one of the most important first steps in setting up an Entreq grounding system. Grounding the negative terminals addresses noise at the point in the system where it has the most influence over everything you hear, and the effect is immediate: the noise floor drops, revealing detail and texture in recordings that was always there but previously masked, and the soundstage opens up. Because a stereo amplifier has two channels, the kit is built as a genuine pair rather than a single shared box, providing complete grounding for both channels in one purchase.

Each Macro Box Tungsten in the kit is a hand-finished oak enclosure, sealed with beeswax, containing Entreq's reformulated mineral mix with the addition of tungsten, a material the brand's research found to offer even greater grounding performance. Every box connects through a single copper binding post and is supplied with its own 1.1m Eartha ground cable, terminated with a spade connector at one end and a 4mm banana plug at the other, with a non-directional design for straightforward installation. Each box grounds one channel independently, so the two boxes must never be connected to the same channel, and each is rated for an effective mass of up to 10kg.

Together, the two boxes and cables give a stereo amplifier complete, matched negative terminal grounding straight out of the box, removing the need to buy two single kits separately. The result, according to Entreq, is a lower noise floor, greater texture in voices, and more space and ease across the whole performance. The Macro Box Tungsten Twin Kit has been recognised with a Highly Commended award from hi-fi+ in 2026, and is a strong recommendation for anyone building out an Entreq grounding system from the amplifier outward.


What Entreq say about the Macro Box Tungsten Twin Kit

Negative loudspeaker terminal grounding is one of the most important first steps in Entreq system grounding, and the Macro Box Tungsten Twin Kit makes it as straightforward as possible - now with our Tungsten Inside technology for even greater performance. There are many ways Entreq grounding products can improve an audio system, but grounding the negative speaker terminals at your amplifier is considered an essential first step. It addresses noise at the point where it has the most influence over everything you hear, and the results are not subtle.

 

Specifications

General
  • Brand: Entreq
  • Model: Macro Box Tungsten Twin Kit
  • Product Type: Twin grounding box kit (negative speaker terminal grounding)
  • Technology: Tungsten Inside (tungsten-enhanced mineral mix)
  • Enclosure: Oak, hand-finished, sealed with beeswax (per box)
  • Cells: 2 discrete grounding compartments per box
  • Effective Mass Rating: Up to 10kg per box
  • Award: hi-fi+ Highly Commended, 2026
Connectivity
  • Boxes: 2x Macro Box Tungsten, each grounding one channel independently
  • Connections: 1x copper binding post per box
  • Cables: 2x 1.1m Eartha ground cables (spade termination one end, 4mm banana plug other end, non-directional)
Weight and Dimensions
  • Dimensions (each box): 145mm (L) x 120mm (W) x 60mm (H)
  • Net Weight (each box): 1.7kg
  • Net Weight (kit, both boxes): 3.4kg
In the Box
  • 2x Macro Box Tungsten ground units
  • 2x 1.1m Eartha ground cables
  • Product Information Sheet

 

About Entreq

Founded in 1999 in Sweden, Entreq is a pioneering company that stands out in the audio industry. Unlike many others, they develop, manufacture, and produce their own products, allowing them to maintain a distinctive approach that prioritises performance and avoids imitating other brands or technical solutions. With complete control over every aspect of production, including constructive materials, design, and connective processes, Entreq ensures its products are unique and focused on delivering exceptional results.

Entreq's two-decade journey has been marked by a series of innovations that have revolutionised the audio industry. While renowned for their ground boxes, they have also introduced groundbreaking products such as Audio USB cables, Audio network cables, network switches for Audio, and DC power cables. Other manufacturers have widely adopted these innovations, solidifying Entreq's position as a leader in the field.

At the core of Entreq's philosophy is a commitment to performance above all else. Their founder, a music lover since birth, recognised the importance of optimising sound quality and has prioritised this goal since purchasing his first stereo in 1973. Entreq believes that performance should take precedence over fancy packaging or expensive marketing, as the enduring impact on sound quality truly matters.

Entreq's early focus on ground purification, introduced in 2007 with their groundbreaking product Tellus, set them apart from the competition. While initially met with scepticism, customers soon experienced significant improvements in sound quality, leading to widespread recognition and appreciation for Entreq's theories about ground and the zero point. Today, their ground purification products, including Tellus and Silver Tellus, continue to be regarded as benchmarks in the industry.

Functionality and performance are paramount to Entreq. Their dedication to delivering exceptional audio experiences is evident when you unpack their products. With years of experience and knowledge, Entreq remains ahead of the curve in development, constantly pushing boundaries to create even more efficient power purification solutions.

Choose Entreq for unparalleled audio performance and discover why their innovative approach and unwavering commitment to excellence have transformed the audio industry.

About Entreq

Swedish maker of passive grounding boxes and ground cables, intended to lower the noise floor of audio equipment.

Entreq is based in Åstorp, Sweden, and its name stands for Energy Transforming Equipment. Its grounding boxes are passive devices that connect to unused sockets on your equipment, such as RCA, XLR or USB. The catalogue also covers ground cables, power and signal cables, and equipment support products.

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A grounding box connects to a spare socket

A box links to an unused input or output on a component, and needs no power of its own. It does not replace the protective earth on your mains supply. Entreq says the effect develops over several days after you connect it, so judge it after a period of listening, not on the first evening.

Single-cell and multi-cell boxes

Single-cell boxes include the Silver Minimus, Olympus Ten and Olympus Infinity. Multi-cell designs such as Tellus 3 and Silver Tellus put several independent posts in one box, and larger models such as Pluton, TenTen and Hero go further. The Max-T ground post can upgrade a box you already own.

Ground cables come in several conductors

The cable between the box and your component comes in a standard 1.65m length, with copper, Hexa, Revelation, Apollo, Suduko and Olympus conductors and a choice of terminations. Entreq describes the aim as a lower noise floor, with darker backgrounds and greater definition.

Why we stock Entreq

Every system carries noise that has nowhere to go, and conventional earthing does not deal with all of it. Entreq build separate grounding boxes that give it a path away from your electronics. It is an unfamiliar category and we were early to it, because the customers who try it tend to hear what it does.

Shop all Entreq →

Specifications

General
  • Brand: Entreq
  • Model: Macro Box Tungsten Twin Kit
  • Product Type: Twin grounding box kit (negative speaker terminal grounding)
  • Technology: Tungsten Inside (tungsten-enhanced mineral mix)
  • Enclosure: Oak, hand-finished, sealed with beeswax (per box)
  • Cells: 2 discrete grounding compartments per box
  • Effective Mass Rating: Up to 10kg per box
  • Award: hi-fi+ Highly Commended, 2026
Connectivity
  • Boxes: 2x Macro Box Tungsten, each grounding one channel independently
  • Connections: 1x copper binding post per box
  • Cables: 2x 1.1m Eartha ground cables (spade termination one end, 4mm banana plug other end, non-directional)
Weight and Dimensions
  • Dimensions (each box): 145mm (L) x 120mm (W) x 60mm (H)
  • Net Weight (each box): 1.7kg
  • Net Weight (kit, both boxes): 3.4kg
In the Box
  • 2x Macro Box Tungsten ground units
  • 2x 1.1m Eartha ground cables
  • Product Information Sheet

We use Royal Mail 1st Class services for our Standard Delivery.

Orders received before 4.30 pm Monday to Friday are usually dispatched the same day by FIRST CLASS post (unless premium postal or timed courier services are selected), subject to stock availability. This does not apply to custom-length cables and speaker cables as these require a longer timescale to terminate. This also excludes all cables selected for the burn-in service. Please note, we do not process orders on national holidays in the UK. Over 98% of our orders are delivered the next working day including Saturdays.

 

Standard delivery is usually within 2 working days, although 98% of all orders are delivered the next working day including Saturdays. In extreme cases, such as delivery to the Highlands and Islands, this may take 3 days.

 

All items are fully insured and come with an invoice from Future Shop. We use the Royal Mail for delivery of small packages and DPD Local or DHL for items that weigh over 2KG. Items over 2KG are fully insured and will usually be delivered within 48 hours of placing your order subject to stock availability. For international orders, we use FedEx or DHL services where customers have selected this option.

 

 

Please note, special orders for non-standard cable lengths may be subject to longer deliver time-scales. This may vary from manufacturer to manufacturer.

 

We offer 'Free delivery on orders over £99' subject to the following terms & conditions:

  • Applies only to orders with £99 or more of items (including VAT at the UK rate), at Future Shop
  • Free Delivery on orders over £99 utilises Royal Mail First Class postal service for items weighing under 2KG. For items weighing over 2KG, we use DPD or DHL next working day services which deliver from 9.00am to 6pm within mainland UK (excludes Royal Mail Special Delivery Services and timed next day delivery services by DPD or DHL).
  • Applies only to deliveries to addresses within mainland UK and Northern Ireland addresses. Applies only to orders that are to be delivered to a single Mainland UK delivery address.
  • You will not be eligible for free delivery on your order if any items are cancelled or returned for a refund, bringing the total order amount below £99. Where items are returned, the refund due will be the cost of the item less any postage costs.
  • We reserve the right to change or discontinue 'Free delivery on orders over £99 promotion at any time.
  • FREE DELIVERY FOR ORDERS OVER £99 OFFER DOES NOT APPLY TO TRADE CUSTOMERS.

 

UK Postal & Delivery Charges - FIRST CLASS

Free UK delivery on all orders over £99*

Weight Price (FIRST CLASS UK POSTAGE)
0g - 1000g £3.95
1000g - 1400g £4.95
1400g - 1800g £5.95
1800g - 2000g £6.95
2000g - 3000g £8.95


* Free Delivery on orders over £99 utilises Royal Mail First Class postal service for items weighing under 2KG. For items weighing over 2KG, we use DPD or DHL next working day services which deliver from 9.00am to 6pm within mainland UK.

Free Delivery for orders over £99 excludes Royal Mail Special Delivery Services and timed next day delivery services by DPD or DHL.

 

Special Delivery UK - Guaranteed Next Working Day

We have 99.9% of the UK covered With Royal Mail Next Day Special Delivery. We guarantee delivery to most UK addresses by 1pm the next working day. This includes Northern Ireland, Jersey and Guernsey. Some places take longer to deliver to but we still guarantee delivery within three working days by 5.30 PM.

 

Please note, Royal Mail Special Delivery for next working day may not be possible where non-standard cable lengths are ordered. If this is the case, the item will be shipped via The Royal Mail Special Delivery service as soon as the cable is custom made.

 

For orders weighing over 2KG, we reserve the right to ship items using Next Day Pre-Noon Courier Services where Royal Mail Special Delivery option has been selected.

 

Channel Islands & Northern Ireland

We accept orders from all Channel Islands including Alderney, Jersey, Guernsey and Sark. Unless you select a premium service, Items weighing under 2KG are delivered using our standard UK delivery option above. For items weighing over 2KG, a surcharge may be applied for all deliveries to the Channel Islands as well as Northern Ireland.

 

European Countries

Deliveries to EU member states are not subject to 20% VAT after December 31st 2020 and therefore the 20% VAT on items is automatically deducted when you log-in, register or proceed to place an order.

 

The customer will be liable for the VAT at the local VAT rate, duty on the import and the brokerage service fee if applicable. This may need to be paid in advance to your local Customs & Excise office or the delivery company before your order can be delivered.

 

We offer the following shipping services:

  • Royal Mail First Class International Airmail Services - Items are usually delivered within 3 to 5 working days
  • Royal Mail Standard International Mail Services - Items are usually delivered within 7-10 working days
  • DHL Express International - Items are usually delivered within 24 to 48 hours. DHL orders must be received by 3:30pm for next day service to most destinations in Europe
  • Federal Express International Priority - Items are usually delivered within 24 to 48 hours. FedEx orders must be received by 3.00pm for next day service to most destinations in Europe
  • Federal Express International Economy - Item are usually delivered within 48 to 72 hours

We reserve the right to change your shipping method without notification if you select a method that we cannot use for your shipment (for instance, we cannot ship via postal services for items over 2 Kg to International destinations). If we need to change your shipping method, we will choose the least expensive shipping method for your order.

 

Worldwide - Excluding UK & Europe

Deliveries outside of the UK are not subject to 20% VAT and so the 20% tax on items is automatically deducted when you log-in, register or proceed to place an order.

 

If applicable, the customer will be liable for the taxes at the local tax rate, duty on the import and the brokerage service fee. This may need to be paid in advance to your local Customs & Excise office or the delivery company before your order can be delivered.

 

We offer the following shipping services:

  • Royal Mail First Class International Airmail Services - Items are usually delivered within 7 to 10 working days
  • Royal Mail Standard International Mail Services - Items are usually delivered within 15 working days
  • DHL Express International - Items are usually delivered within 24 to 48 hours. DHL orders must be received by 3:30pm for next day service to most destinations in Europe
  • Federal Express International Priority - Items are usually delivered within 48 hours. FedEx orders must be received by 3.00pm in order to ship items the same day, subject to stock availability
  • Where the actual weight of the package significantly exceeds the shipping cost charged on orders, we may write to you for an additional shipping charge. For larger orders, items may be shipped in multiple packets at our discretion

We reserve the right to change your shipping method without notification if you select a method that we cannot use for your shipment (for instance, we cannot ship via postal services for items over 2 Kg to International destinations). If we need to change your shipping method, we will choose the least expensive shipping method for your order.

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