Featuring the latest and most advanced LessLoss Skin-filtering technology, the Firewall Module blocks noise pollution to levels traditional capacitor and coil-based solutions can only hope to approach. Developed from our critically acclaimed DFPC (Dynamic Filtering Power Cable), the LessLoss Firewall Module reveals hidden subtleties of the entire audio event as it eliminates the widespread negative effects of high frequency noise pollution. Use the Firewall module with any equipment so that its potential performance can be realized in today's over-polluted electro-magnetic atmosphere.
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Our very finest "5x" Firewall module contains five Firewall modules in a special directional proximate relationship, resulting in sound quality which is even better than five Firewall modules in series!
The four USB Firewall Keys shown above are sold separately.
Pictured is the state-of-the-art Firewall module with the sub-modules already integrated inside. Stacking is now possible for superlative results. Discounts are gladly offered to those creating power conditioners which include more than 6 units. Please write to us for more information and good luck with your DIY project! Refer to the "Here is all the nitty-gritty" PDF file for installation guidelines. Unbelievable audio performance awaits those who implement this new technology! It has been 14 years in the making!
2+ Units: 5% off       4+ Units: 10% off Add number of products   

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Most deliver in 2-3 business days.

Just as the DFPC Reference is a highly effective upgrade to the DFPC Original and Signature, the Firewall Module represents the ultimate upgrade for use with any of the DFPC power cords. Where the DFPC leaves off, the Firewall Module takes over. Because the short lead of the Firewall module is highly flexible, it can make installation even easier regardless of circumstances. One can exchange existing traditional power filter technology based on resonance for Firewall modules, and thus obtain the ultimate audiophile sound quality, at a much lower cost.

The Firewall module is an efficient, lightweight, low cost alternative to heavy, costly power filters. Almost every customer winds up exchanging existing traditional filtering technologies for Firewall modules.

The Firewall Module does not color the sound nor influence dynamic performance. Unlimited sound quality improvement is available through daisy chaining multiple units in series. Fear not that one might achieve overkill should multiple units be used together. That built-in deficiency is the realm of traditional filtering technologies built on caps and coils. Traditional filtering is based on resonance of a limited bandwidth. And, as it turns out, that is indeed the very definition of a color. LessLoss Skin-filtering exhibits no resonance of this kind, and, thus, does not color the sound.

If using power distribution units: we recommend using units containing no internal fuses or traditional filtering elements (e.g., capacitors, chokes or transformers). Customers report excellent results using Furutech model e-TP60.

The Firewall Module is an excellent component isolator. The filtering provided to the power of a system can equally well be used to provide isolation of noise from one piece of equipment to another. Typically, digital source gear tends to be the most noisy to the rest of the gear in the system sharing the same power line. To separate these, multiple Firewalls are recommended, and they will all effectively filter in both power flow directions, bringing the system’s performance as a whole to unprecedented levels.

In application, the Firewall was conceived as a modular system: we’ve designed it to be used in a variety of ways in a variety of systems, maintaining a very low cost of introduction. This way it provides maximum usability and ease of incorporation into any system’s space and performance requirements.

More on the Firewall Module

The LessLoss plug-and-play Firewall Module power conditioner features a C14 inlet and a C13 plug, for direct connection between a power cord and your equipment. Through simple connection, your existing equipment's performance matures to an entirely new level, regardless of make.

The enclosure is milled from two pieces of solid oakwood. For superb micro-vibration control, the C14 inlet is mated directly against the natural oakwood enclosure. No metal housing can provide this type of performance, regardless of the use of even the most exotic rubber damping. Aluminum is particularly harsh on sound quality, lending a type of unavoidable artificially etched ’hi-fi’ type sound. The Firewall module contains no aluminum whatsoever, and facilitates an organically rich, natural sound quality.

The attractive antique oakwood enclosure contains the Firewall electronics themselves, which are mated directly to its inner hardwood surface to obliterate micro-ringing directly at the source of action. Any time an electromagnetic current runs through a wire, some amount of micro-vibration occurs due to resistance. Our solution deals comprehensively with both electromagnetic as well as low level acoustic noise. At this level of performance, both must be taken into account in equal measure if the solution is to claim maturity.

LessLoss Skin-filtering is our advanced proprietary noise reduction technology which leaves standard cap-and-coil filtering methods far behind. In fact, the use of our technology reveals shortfalls of standard filtering methods and can therefore replace them altogether.

The Firewall module features our most advanced LessLoss modified C13 plug. It has a much tighter grip than the standard version. This translates to a stronger electrical contact pressure with rock solid control of sound. No brass is found in the signal path. A special prolonged cryogenic treatment process is carried out which lends a relaxed, natural tone quality revealing the most natural details. The clear body is no accident: color agents all introduce their own fingerprint on to the sound. This solution is completely in line with our colorless Skin-filtering process. Together with superb micro-vibration damping and cryogenic processing, the Firewall module is the best gateway for any equipment to receive high quality power. Without quality power, audio performance is limited even by the most exquisite gear.

Use the Firewall module with any equipment so that its potential performance can be realized in today’s over-polluted electro-magnetic atmosphere. Every recording contains layers and layers of emotionally charged valuable data which remain entirely hidden from the listener unless the power is properly conditioned. Through LessLoss Skin-filtering technology, power is stripped of noise and dynamics are never compromised in the process. The product is lightweight and simple to install. Its low price and extremely high performance make it unique.

LessLoss Skin-filtering does not color the sound nor influence dynamic performance. Before considering costly power supply upgrades involving large film capacitors or heavy silver wound coils, keep in mind that their ultimate performance is limited by the losses involved in the filtering method itself. Traditional filtering is based on resonance between capacitance and inductance. With the LessLoss Firewall Module, upgrading your equipment has never been more cost-effective or easy. Our plug-and-play Firewall modules raise the performance level of any audio or video equipment far beyond the realm envisaged by their original designs.

At the heart of its functionality, the Firewall Module features our tried and tested Skin-filtering technology upon which our power cables are based. Skin-filtering makes perfect use of the way that alternating electrical current naturally travels down a wire. Its functionality is based on the principle of attenuation over distance, and on the high-frequency skin effect first described mathematically in 1883. Users the world over attest to the supremacy of this technology when comparing to traditional power filtration methods based on the resonance of capacitors and inductors.

Because nature determines that high frequencies reside at the skin of every conductor, it is easy to understand why LessLoss Skin-filtering is the audiophile’s best and most efficient tool to condition the power before it enters his or her audio component. Treating the skin of the conductor attenuates HF noise, preventing it from entering your gear. Because this filtering solution is employed only at the skin of the conductor, the solution never restricts the low frequency power flow your gear relies on. This way you get enhanced HF attenuation without compromising dynamics or coloring the sound.


The Firewall Module is a unique no-capacitor, no-inductor solution for today's noise-laden mains. The solution’s efficient nature reveals itself immediately, as an obviously lowered noise floor, and then, over time, in an ever-growing and blooming naturalness of sound quality. A cleaner, clearer picture emerges as the music’s inherent dynamics flow freely, unrestrained by otherwise ubiquitous power source deficiencies. Unlike transformers, the Firewall Module produces no voltage difference between input and output, and, also unlike transformers, does not buzz or hum, nor does it lose efficiency in the form of heat.

We build custom power distributors / conditioners

We can gladly integrate our highly effective Firewall technology into a custom power distributor according to your specifications. Below you will find pictures of our most ambitious project to date, with 116 Firewall modules onboard and 10 high performance outlets.

We are happy to offer advice to get the very best price/performance results to fit any budget.

Click the thumbnails below for additional descriptions and ideas for your own project. Simply contact us on info@lessloss.com and we'll be happy to discuss your needs according to budget. We always squeeze out the best from any given budget.

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