Entreq Cleanus Tungsten

The Cleanus Tungsten is an entirely passive mains filter featuring Entreq’s Tungsten Inside technology. More accurately described as a high-frequency separator, it draws contamination away from your mains supply before it reaches your audio components, without imposing any dynamic constraints on your system. Cleanus Tungsten includes all necessary cables for connecting to your system.

Most of us know when something isn’t right with our system. A slight hardness to vocals that wasn’t there before. A sense of compression during complex passages. A soundstage that feels flatter or less open than it should. These symptoms are often attributed to components, cables or room acoustics, but frequently the culprit is far more fundamental: the quality of the mains supply itself.

The modern home is not a kind environment for sensitive audio equipment. Every LED dimmer, smart device, router, charger and appliance with a switching power supply injects high-frequency interference back into the mains. The cumulative effect is a raised noise floor that sits beneath your music, masking the fine detail and spatial cues that distinguish a good system from a great one.

Cleanus Tungsten sits at the heart of the Cleanus range, offering Entreq’s Tungsten Inside technology in a form that addresses moderate to significant mains contamination. It connects to a spare mains socket via an Entreq power cable and works passively, drawing high-frequency interference away from your supply and absorbing it into Entreq’s mineral mix. Nothing is compressed, nothing is constrained. The noise simply has somewhere else to go.

For many systems, Cleanus Tungsten represents the ideal balance: enough capacity to make a substantial difference in environments where mains quality is a known concern, without stepping up to the Olympus tier. The choice between Cleanus models is not about the quality of your audio system but about the severity of the interference in your mains supply. Your local distributor can help you determine which model is the right match.

Conventional active mains filters and conditioners work by restricting what passes through them. The trade-off is often audible, reduced dynamics, a loss of life, a sense that the system is being held back even as the background becomes quieter. The Cleanus Tungsten takes the opposite approach. As a purely passive device, it removes noise without touching the energy your components need. The music retains its full dynamic range and natural flow, but against a noticeably darker, cleaner background.

The Cleanus Tungsten features a copper binding post, allowing it to be connected to an Entreq ground box via an Eartha ground cable. This grounds the Cleanus itself, giving the absorbed interference an additional path to dissipate. Connecting a Cleanus Tungsten to a Silver Tellus Tungsten or Olympus 10 T ground box will deliver an even greater impact. A worthwhile step for systems that are already benefiting from Entreq grounding elsewhere.

As with all Entreq products, we recommend consulting with your local distributor to get the best advice for your system.