Why use Entreq Ground Box's ?  

A clean, solid and fixed ground point is the most important factor for precision! 
The ground should be Zero. A clean, solid fixed point. A fixed point where everything in the power net and all units in your system can refer to as Zero. But sadly, it is far from that in reality.
We also normally say 220V 50Hz alternative110 V 60Hz. But there are a lot more frequency on the power net. These is caused by the way we connect zero and protective ground together in the main central/fuse boxes and all devices we connect to the power net. All together this cause a lot of unwanted high freq noice and magnetic fields that distore.

Current goes in and current goes out of switched devices and lighting fixtures of every kind.
All of these make the current messy. Not least computers with their switched power units, chargers for mobile telephones, all the halogen and LED lighting, dimmers etc. all cause a great deal of high-frequency noise, stray voltages. and magnetic fields.
This noise seeks the easiest path to the earth. And since these pollutions can be everything from 50-60 Hz to very high-frequency, weak, currents, it is not often that the path of least resistance is via the protective earth.These currents instead can find dishwashers, laundry machines, counter tops with waterpipes,etc.  
Your HiFi rack and stereo set with all the cables and devices are a most attractive place. 
Moreover, these high freq often generate magnetic fields that absolutely have influence and bad impact on the sound reproduction.

The big problem is the protective ground.
Many times it is overloaded or not constructed for handle these pollutions. The safety ground can handle
a real "bang" of 110-220Volt and X Watts without any problems, but when it comes to these small currents of
some Milli V with very high frequencies it doesn’t always catch them. And if it catches them, it many times
doesn’t get rid of them.
So, in fact, it can be the opposite. The protective ground can leak back HF pollutions to the net. 
These pollutions will flow around in the power system searching for a place to ground and fade away.
And places as your TV or your HiFi system, with all the cables and magnetic fields load up them. The pollutions
 have simply nowhere else to go. They flow around there in their search for ground and peace.

When connect to a groundbox, you get a fixed, stable point where all units in your system can refer to point zero. And you also offer this pollutions a place to fade away. 
This high-frequency, but weak currents, are atttracted by the galvanic mineralmix and the Para, Dia and Ferro magnetic metals.The high frequency currents move over to the box, where they will be transformed.

Once you have attached one of our ground boxes and begin get rid of HF pollutions you will hear more details in the music. You also will get a better flow, more air and improved dynamic. For use a metaphor, it´s like when you have driven your car with handbrake applied and then release it. Everything works so much easier. The HF noice not only hide details. It also have impacts on the signals flow.  

The principle for a Entreq Groundbox

We can not protect our innovations with Pat. Pending.
 So, we need to keep everything about the construction with strict secrecy. This of course had served up for pillocks to write a lot off fake on forums. But that is another story.
To the right you see a schematic draft for a Silver Tellus Infinity groundbox.
We use different layers of metals mixed with minerals to create a Para, Dia and Ferro magnetic  galvanic point that acts like a concentrated piece of Earth.
By changing the metals, minerals, size, weight, case construction and differing conductors we get several
levels of performance and types of groundingboxes.

Imagine the construction as a battery, but opposite. Instead of create and send out, it pull back and consume. 

We normally never tell anything about the way we construct our boxes.  
But this we can show. We don´t think any can copy the Infinity treated special made parts we use inside a groundbox.
They are of Pure Silver, Tungsten, Stainless, Alu, Brass, Cupper etc.

Olympus 10 and Siver Mini Boxes Olympus 10 and Siver Mini Boxes

The weight of the units you connect to tell you which box you should use.

Silver Minimus and Olympus Ten Tungsten have a weight of 2 kg.
As a guide you can say that a box works best when it ground and drain units 0 .5 -5 times their own weight. In real terms it means we recommend Silver Mini or Olympus Ten to ground/drain 1 or 2 units as long as the total weight of them is less than 10 kilo. Silver Minimus are the entry level box. If you want the best impact, use Olympus Ten T
If you connect heavier units with more mass and bigger chassis, it doesn’t mean that the box stops working. But you losing performance.
There are simply too small mass in the groundbox for drain best way. As I think you now understand, we need a certain mass in the groundbox for it should be able act as a fixed point and give most impact.
Electrical units with low power consumption and light chassis as many DACs, many Pre-Amps, CD players, Routers, Switches and so on is the perfect match for these boxes. Also perfect for be used with EEDS. 
Another area is when you want to use neg speaker grounding on small Amps.

Olympus Infinity Boxes Olympus Infinity Boxes

Olympus Infinity, Olympus Infinity Tungsten have a weight of 10 kg. They can ground/drain 1 or 2 units with a total weight up to 40-50 kg. In fact you can connect even more units, as long you dont overload the box. You will hear when you reach limit.
They work well with all kinds of electronics that have a weight 8-50 kilo.
The boxes also work well for ground all kind of Power splits. They also work good for neg speaker grounding on all Amps
This guidelines above are not stated in stone.You will always get an impact when you connect a groundbox.
But for best performance you need match weight on ground box with the units you connect to.
Also, Olympus Infi Tungsten line with Eartha Olympus cables will give the highest quality in all applications.
But also the other Entreq Eartha cables will give you best value for money.They are developed simultant with our groundboxes.
Please check " Eartha cables" for more info. 
Negative speaker post grounding on Amps use to give a very good impact and is something we really recommend you do.
But before you do it, please download our manual or contact us for more info.
None of the boxes stated above can replace a protective safety ground.

 Tungsten Line.  A Statement for Progress and Impact.

Olympus Ten T.

We introduced Olympus Ten 2017
And since that year, the Olympus Ten has been our most sold box. Now it´s time for a new generation to take over.
Olympus 10 T will be the new star.
This little box , together with an Eartha Olympus, make you a very powerful earth point that provides a quiet and interference free back-ground.

OM 10 T works best with units with a weight less than 10 kg.
During such circumstances you have insured you have the best possible conditions. If you connect heavier units to OM 10 T, it doesn’t mean it stops work, but for each kg extra, you will lose little performance.
With OM 10 T you will get even darker, deeper background then before with OM 10. And OM 10 T create a kind of 3 D that we want to call 4 D because we can not find other words for the impact.
We also produced Olympus Ten T to meet all demands in a multi box.
The Olympus TenTen.
Weight 2,6 Kg  W 17cm - H 8cm - D 19cm


Olympus Infinity T.

Olympus Tungsten has an Aura of confidence. The improved Infinity technology, the adjusted mineral mix, the special ceramic and Tungsten metals, and the new improved casework. All together gives Olympus Infi T a aura of solid trust and confidence. When you look at and handle this ground boxes, they tell you
“ Leave it with me, I handle it” 

And they will! Together with an Eartha Olympus, you get a very powerful earth point that cleans up and sorts out.
What’s left is a very quiet and dark background that lets you hear more details, more dynamic and easy flow in music. You sometimes get a 3 D feeling so strong that we like to say 4 D 
It's like you wear very good sunglasses on a bright day. You get it all, but so easy, relaxed, and natural.
Olympus T also bring us as company confidence. When have been the Primus motor in the progress that end up with a unit like this, with such impact, you only can be confident and proud.
We also produced the Olympus T to meet all demands possible in  multi boxes. The Olympus Hero 5 pcs and Pluton 3 pcs
Weight 9 Kg  W 22cm - H 14cm - D 25cm


The Olympus TenTen contains ten pcs Olympus Ten T.  It make the box to a real multitool.You can either use the boxes separately and connect an Eartha cable to each cell or you can bridge connect 2, 3 or 4 cells together with our T links. One option in particular is the ability to now Ground each channel of your amplifier, via the negative speaker terminals,  while simultaneously & independently being able to Ground your Pre-amp, Dac and cables at the same time.
TenTen also contains a Cleanus in the vibration-damped box. Connect to wall sockets and you get equal effect as if with a separate Cleanus. 

TenTen W36 x D49 x H28 27 kg 

Pluton. Three Olympus Infinity Tungsten block in one box. With its six pure solid Silver binding posts the Pluton offers a level of performance & an almost limitless set of options that only Hero can do better. One option in particular is the ability to now Ground each channel of your amplifier, via the negative speaker terminals,  while simultaneously & independently being able to Ground your Pre-amp or Dac at the same time. This option alone offers an unrivalled level of performance. This is just one option, there are lot of others. Please contact us or your dealer for find out the best way to use Pluton in your system.
Please read more about Olympus Infinity and Poseidon below on the side.
Pluton also available as Infinity line on request. 
Pluton 35 kg W49 x D35 x H28

                                               Olympus Hero.

Our Pride! Our Baby! Our Statement!
New materials.  New technology   
New construction. A Swiss army knive.
Hero containes 5 Olympus Infi T in a box and 1 Cleanus.

You can either use the boxes separately and connect an Eartha cable to each cell. Or you can bridge connect 2, 3 or 4 cells together with our T links for more impact. Hero also contains a Cleanus in the vibration-damped box. Hero meet all your demands.
Connect to wall socket and you get equal effect as with a  Cleanus. 
Olympus Hero contains 5 separate Olympus T boxes and a Cleanus.

The five Olympus Infinity T in a Hero are enclosed in a vibration-damped Oak box made of the same three-layer material that we use for the Athena rack and Magma feets. 
Hero W36 x D49 x H50  60 kg 

Infinity line boxes.  For best price vs performance.

Silver Minimus Infinity

Silver Minimus Infinity Silver Minimus Infinity

Silver Minimus Infinity is the  right choice for you who want a entry box you can use on many places in your system. It is perfect for Routers, Switches, DACs, cables and even pre-amps. It works very well with all our Eartha cables and if you want upgrade with K2, Everest or Peak4 you have a box that meet most demands you can possible meet. A good start up box.
There will always be a place in your system where a Silver Minimus Infinity will make big difference.  
Weight 2Kg  W 17cm - H 8cm - D 19cm


Silver Tellus Infinity

Silver Tellus Infinity Silver Tellus Infinity

Weight 22 Kg  W 43cm - H 14cm - D 31cm
Silver Tellus Infinity with the new Infinity technology has like the old Silver Tellus 4 binding posts. But on S T Infinity 3 are linked together and 1 is separated, so you can use it for Wall socket or another source that you want have separated.
But S T Infinity are not made for neg speaker pole grounding. 

You hear straight away the relationship S T Infinity have with our flagship Olympus Infinity. A flow and punch in the music that is hard to find other way. There are something special with the Infinity technology that gives a flow and dynamic that are significant for Infinity. The mass of nearly 20 kg
(biggest cell we have) alow you hook up a whole system to the box. 
  Note : The Silver Tellus Infiinity with the mass of 20 kg can handle up to 8 units. It is a good idea not mix digital and analouge units to same S T.

Tellus II Infinity

Tellus II Tellus II

In one way Tellus II Infinity is old stuff in new packaging. But at the same time it's a totally new groundbox that will open up for many new possibilitys. Left and Right outlet are two separated Silver Minimus Infinity and the outlet in the middle is an Olympus Ten with a silver binding post.

In other words, its a "entry level Poseidon"  
It  offers three dedicated ground points wich are toyally separated from each other. For further information about all the options, please take a look at the Poseidon. Tellus II Infinity work the same way.
Together with our dedicated Eartha cables, K2 or Everest there will be a combonation that works for you.  

Weight 15 Kg  W 43cm - H 12cm - D 31cm


K2, Everest and Peak 4 Tungsten

K2, Everest and Peak 4.
We always use wooden caps on our binding posts as standard. Wood is totally neutral and adds or deduct no new capacitys. In that sense wood is perfect. The opposite is to use plastic’s and metals. 

We use this fact for fine tune our ground boxes.
Other manufacturers use this fact and call it grounding, which is, diplomatic said, pathetic in our opinion. This is a add on unit and not grounding
For more info , please go to site K2,Everest, Peak 4


Previous models. Available on order.

Olympus Infinity

Olympus Infinity Olympus Infinity

A statement for all groundboxes
Once we had developed the Eartha Infinity cables a new world open up for us. And with the knowledge about how the performance change after we treat the metals with high pressure, we decided to build a box where we have implement the knowledge we get from the Infinity cables.
A " cost no object" project where we use all our knowledge so far.The result is stunning.Our top of the range box Olympus Infinity is together with Olympus Infinity Tungsten by far the best ground boxes we ever made. Sorry to say also the most costly we ever made, but in our opinion they give the user full value for the money.
Together with our Olympus Eartha groundcables you will reach a 3 D soundreproduction that are exeptional.You will get a detailed, lifley soundstage from your system that you never can reach other way.  

Weight 9 Kg  W 22cm - H 14cm - D 25cm

Olympus Ten

Olympus Ten Olympus Ten

Olympus Ten are the result of more than ten years of experience from groundboxes.
Olympus Ten is the first box where we use Infinity tech.The leap in performance compared with Silver Minimus is not subtle.
You will hear it right away. Of cource the bigger brothers Olympus Mini and Olympus Infinity have more solid effect, but we hardly believe you ever will find any other box in this size that give you so high performance for so reasonable price. 

Olympus Ten is the smallest box in the Olympus line. It is by far our most sold box.

Weight 2,5 Kg  W 17cm - H 8cm - D 19cm


Poseidon Poseidon

The Poseidon can be best described as three totally independent Olympus Minimus in one box. With its three pure solid Silver binding posts the Poseidon offers a level of performance & an almost limitless set of options that only Pluton can do better. One option in particular is the ability to now Ground each channel of your amplifier, via the negative speaker terminals,  while simultaneously & independently being able to Ground your Pre-amp or Dac at the same time. This option alone offers an unrivalled level of performance yet to be attained in any other single Entreq Ground box. This is just one option, there are so many more. Please contact us or your dealer for find out the best way to use Poseidon in your system.

Weight 32Kg  W 43cm - H 14cm - D 45cm


Olympus Tellus

Olympus Tellus Olympus Tellus
No longer in production!!

                                                                                                                                                                                                                                                                                                                                                                                                                               The Olympus groundboxes are different from Tellus /Silver Tellus in many ways.When we developed the “Supercharger line” Atlantis we found many interesting details.
With the Olympus line we were totally free to implement all of our combined knowledge, using no fixed parameters to re-design from the ground up.
So in the Olympus Tellus we have seven grounding posts and employ an all new mineral-mix. As well as a reduction of the quantity in some metal particulates. There is also the inclusion of some all new metals, one of which is Magnesium.
This together with six all new solid Silver binding posts, instead of our normal solid Copper posts, gave us an even better noice reduction. In the Olympus Tellus we have also employed one special solid Copper binding post that is completely isolated from the other six Silver grounding posts. This can be used for connecting a specific new mains Eatha cable. This can give a direct connection to the protective ground found in your mains sockets. This reduce's the noise floor significantly! It can of course also be used for other purposes.
The Olympus Tellus offers the same overall sonic signature as the Olympus MinimUs. Deep and massive low frequencies while still retaining the air and texture in the wider spectrum. The separate outlet, allowing direct connection to a wall socket, ( the protective ground) will give you a whole new experience. Connection to the protective ground gives an even darker background and will let you explore more subtle nuance and details within the music.

Weight 46 Kg  W 40cm - H 20cm - D 50cm
K2 & Everest K2 & Everest

Our entry level box. Together with a Eartha Cupper or Discover you get a first class ticket into Entreq grounding and a quality of grounding that say "follow me" to most other brands boxes and cables.

       Weight 2,5 Kg  W 17cm - H 8cm - D 19cm                      

Earth Cables Earth Cables

The choice of Eartha cable for your grounding system are at least as important as your choice of groundbox.
Box, cable and unit should work together. 
Our Eartha cables are developed simulant together with our boxes for give best performance.
So with that said, always choose a original EA cable for your grounding system.

For more information please visit our  section on "EarthaCables"                           

Olympus Minimus

Olympus Minimus Olympus Minimus

Olympus MinimUs, has only one outlet but in this case it is solid Silver. 
Olympus Mini is primary designed for ground Amps and Dac's. But it can also do a very good job with grounding of our cables and our CleanUs line. The most significant difference in performance, compared to Olympus Ten, is the solid dark background in the sound caused of the fact that we have much more mass and weight in the box.it give a deep and massive low frequencies while still retaining the air and texture in the wider spectrum. Even if it not a Infinity box it still have all benefits from the Olympus line. 

Weight 9 Kg  W 22cm - H 14cm - D 25cm
Tungsten Logo Tungsten Logo

We introduced the Infinity technology in our ten-year anniversary groundbox. 
And since that year, the Olympus Ten has been our most sought-after box. This was the first box with Infinity technology and it was a breaktrough.Olympus Infinity is the bigger brother
Now, five years later, we are proud to release our perhaps most solid statement ever.
Olympus Infinity Tungsten. A statement of progress and Impact.
Whith Ceramic and Tungsten and a new mineralmix we have reached a new level of performance.
A solid, fixed point which give a silent dark background. The impact give a sound as never before. 
The Tungsten logo with the Infinity eight is an assurance for impact and satisfaction.
You can read more about these exiting materials if you follow the links. 
https://en.wikipedia.org/wiki/Ceramic            https://en.wikipedia.org/wiki/Tungsten 
All our products are developed and tested on several different systems.  
And also on many different places with different conditions.