Entreq Macro Twin Kit

REVIEW
Paul Soor
Jun 30, 2026

The Macro Twin Kit (comprising two identical Macro Box units) is the first of a series of reviews of various Entreq grounding products. For over 20 years, Entreq has developed an understanding of improving audio performance by addressing the magnetic fields in audio circuits, especially in and around the ground. Entreq products address the signal return path to the ground that appears in many locations in your system, including power, line-level signals, speakers and data (digital and Ethernet).

Flowing electricity generates a magnetic field. Managing electromagnetic fields in certain situations can mean the difference between life and death, such as with medical test equipment, or for us, the difference between a good sound and a great sound.

Earthing, grounding or ‘magnetics’?

If you look at the circuit diagram of any audio equipment, you will see a ‘0 volts’ line called the ground. This is different from the Earth – although they are usually connected in mains-powered equipment – which is there for safety in the event of an electrical fault – another life-and-death situation! The ground is critical. Think of it as the floor level of your circuit, where all voltages (and audio signals) are measured relative to it. Managing this reference properly is essential to avoid noise and distortion in audio systems. Keeping it clean and well-routed is also crucial for good audio performance.

Entreq focuses on the ‘magnetics’ manifested as electromagnetic interference as well as radio frequency interference. The sources of this interference come from other internal components, but increasingly from external sources as well. Thus, Entreq’s grounding products attract and absorb that noise through their matched connection cables.

System matching

I have experienced that Entreq grounding boxes and cables need to be carefully matched to your system because every hi-fi system is different. Speaking to Fraser Robertson of Airt (Entreq’s distributor), it’s interesting to note that the more expensive Entreq combinations may not sound best in your system. It’s an interesting cognitive dissonance that some people struggle with… surely the more expensive one must be better? So, Fraser and his dealers actively encourage and help customers determine the right combination by, at the very least, providing a grounding box with a selection of cables to try. However, to help people get started, Entreq has developed kits.

The Entreq Macro Box is designed to connect to the negative speaker terminal, as it is usually connected to ground, at your amplifier, one box per channel. Each wooden box is about the size of my hand, beautifully constructed, and finished with beeswax. I placed each box on either side of my David Berning QZ power amplifiers. The cables are terminated with a spade connector on one end and a banana plug on the other. It’s not directional, which makes it easy to match the amplifier terminal.

If I Didn’t Know Better

Given that the Entreq Macro Twin Kit is £700, I wasn’t quite prepared for such a wonderful improvement to my listening experience. I will say, however, that they take at least a few hours to settle. Upon first listening, I found the sound to be a little fatiguing. But a few hours later… it was gone. Over the next few days, I noticed the sound becoming a little more refined. I’ll tell you now—I could not help myself—so I did lots of A-B comparisons because it was so easy. Suffice to say, it was always better with the Entreq Macro Twin Kit.

I found myself listening to “If I Didn’t Know Better” by Luther Vandross from the album Dance With My Father [J Records]. With the Entreq Macro Twin Kit, Luther was noticeably more present in the room. The track improved from a relatively condensed sound concentrated at the speakers to one that flowed out, with a wider, airier sound stage. His annunciation was even more nuanced and expressive. It led to less of a barrier between me and the music, for greater involvement. The Entreq Macro Twin Kit did indeed lower the noise floor. I loved that.

Welcome distraction

It left me scratching my head because before installing the Entreq Macro Twin Kit, I had no complaints with the sound of the system. But then along comes something new, and I found myself gripped by the music, losing all sense of time, cueing more tracks and forgetting I had a review to write!

I love the track “Woman In Chains” by Tears for Fears from the album Seeds of Love [Fontana Records]. During the time when I owned a Linn Sondek, Naim Nait 1, and Linn Kan’s, it sounded quite harsh and sometimes confused. As my hi-fi improved, it calmed down, allowing the artistry, authenticity, and emotion to shine, especially with my current set-up. Then I added the Entreq Macro Twin Kit. Immediately, the snare drum shots produced a longer decay, beautifully introducing the keyboards, followed by the vocals of Curt Smith. When Oleta Adams enters, she is remarkably clear in her intent and expression, capturing your attention completely!

I must mention bass. I know that Entreq does not claim to stabilise the 0V ground, but, excuse the pun, the Entreq Macro Twin Kit makes the system feel like it’s on more solid ground, especially the bass. This means there is no sense of slightly wavering low frequencies that lack conviction or impact. That feeling of a stable ground allowed me to relax and enjoy the music, removing any anxiety of possible congestion as the track progressed and frequencies collided – or rather did not.

Easy

This was such an easy review. I just installed the Entreq Macro Twin Kit, let it settle for a day or two, and listened. It delivers the kind of improvement you would expect from adding an improved power supply to your preamplifier, perhaps a clock to your DAC, or top-quality supports under your equipment. In that context, the Entreq Macro Twin Kit represents excellent value for money. I didn’t detect any downsides to the Entreq Macro Twin Kit in my system, which is why it’s staying!

Editor’s note: This series on Entreq has been a long time coming. The original concept for this review series was discussed with Chris Thomas before his untimely death. It seems fitting that this review cycle begins again with his close friend Paul.