User Reviews

Published LessLoss Reviews Now Number Over 727

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Firewall Module

Date Added: 07/27/2021 by Chris L
I recently purchased the C MARK 640X after reading published reviews. As recommended in the review I installed it on the input to my power board which supplies the digital front end of my system.

This is an amazing product, I was surprised at the difference it made. The improvement was immediately noticeable and significant. There is more air around instruments, background is quieter and bass is more defined.

I think this is the best value improvement I have made to my system and being a passive device it will last for ever. Well done on another great product.
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C-MARC Classic loudspeaker cable, stereo pair; Blackbody; Firewall Module; C-MARC Classic Power Cable

Date Added: 07/18/2021 by Joshua J. Wright
When I first read about the LessLoss technology I was a bit skeptical. Since I already loved the way my system sounded I had difficulty believing that it could sound even better than it already did. Louis assured me that I would be impressed, so I took the dive. The first thing I tried was the C-MARC power cords with ENTROPIC treatment. The 2 power cords were applied to the DAC and to the pre-amp. At first the sound seemed to close in and become less involving. By the 3rd day of listening it became apparent that I was hearing sound that was more coherent, and phase correct, producing a more musical overall result. Inner details, textures, and the bass all took a significant step forward. After experiencing these effects I went ahead and added 2 untreated Reference level PCs to the amplifiers which resulted in magnifying the effects noted in the DAC and Pre-amp.

After the power cords I was curious about what the Blackbodies (total of 4) would do for the sound. This addition caused the most significant initial sonic degradation of anything I have ever added to the system. It took about a week before the benefits became fully apparent. Strangely enough the biggest improvement came after leaving the system off for a week. When I turned it back on the sound had totally transformed. It was as if a switch had been flipped bringing everything together. Suddenly there was a clear open window of sound with extended decays and sustains surrounded by the acoustic space specific to each individual venue and recording technique. All frequencies were proportional, gone was the bass heavy bottom up effect I had noted earlier during the initial break-in period. Also gone was the increased dynamic slam and exaggerated dynamic contrast that was previously prominent. What remained was a very natural balanced, and detailed presentation free from any detracting artifice. The background was much more quiet, allowing the tiniest details to emerge effortlessly, as if being spontaneously emitted from the space in between the speakers. The imaging was excellent before, but now it was if the speakers actually ceased to exist. The sound also became more concise, focused, and clean; making it apparent how much extraneous noise was infiltrating all aspects of sound before the Blackbodies were added. Initially this effect made me feel like I was missing certain aspects of the music, but over time it became apparent that it was only distortions that were missing, as new worlds of detail were exposed from old familiar recordings.

After all of this I could not believe that the sound could get any better, but Louis provided me with this quote from another customer. “How the heck could I even listen to it and rejoice in it back then?” This from a customer who thought it could not get any better. That was the exact feeling I had after installing the Firewall For Loudspeakers. In total I have added 4 sets to the speakers. I could have easily stopped after the the 1st set, as the improvement in tone, micro nuance, and overall integrity of the sound was beyond anything I could have expected. However after adding the 2nd set I too was saying to myself “How the heck could I even listen to it and rejoice in it back then?” The whole sonic landscape elevated particularly in the bass region which became even more effortless and detailed. It was as if the whole system was upgraded. The music was just “there” without any veils or resistance to most minute details. The sound was fuller from top to bottom, with more life like nuanced transients, and deep deep views into the sonic fabric and the most delicate textures and tonal inflections. The system never sounded this effortless, as if it had become super-conductive and friction free. Talk about lifting veils. Consequently I now have 4 sets of Firewall for Loudspeakers installed.

At his point I thought there is no way things could get any better, but as it turned out I was wrong, again. Louis built a custom set of Jumper cables specifically designed to work with Avantgarde Trios with BassHorns. These jumper cables were made of C-MARC, ENTROPIC cable with a DIY Firewall For Loudspeakers as junction splitter box. As usual there was an initial sonic suck-out upon first listen, but over the course of the week the sound again blossomed into something I have never before encountered from the system. Even after adding all of the other LessLoss devices, the sound again took another leap forward. It is not that I didn’t think the system sounded good before, it’s just that the improvements were of a type I had not yet experienced. All of the other improvements to the sound were still present, but were now being presented in a new light. The soundstage, imaging, and acoustic space all seemed come together to form an aural illusion so seductive and infatuating that I cannot stop listening and rejoicing in the sound. This type of sonic improvement is difficult to put into words, but after you hear it you will know exactly what I’m talking about.

Effortless, organic, liquid, holographic, 3D sound reproduction appears to be a byproduct of not just eliminating noise from all power and signal carrying cables, but of also reducing the effects of environmental EMI and RFI which can permeate every component. That is exactly the result I feel has been achieved from using the LessLoss devices. It is very difficult to say which device has had the biggest impact, but I can say that they appear to work synergistically. Individually each device has made sonic improvements which after hearing I did not want to live without.

My compliments to Louis and his organization. They have have proven to me that it is in fact possible to improve on even the most impressive sound systems, regardless of how good they already sound.

Associated Equipment:

The entire system has evolved over the last 17 years. The only components that still remain are the speakers and upgraded versions of Audiopax Model 88s which were upgraded to MkII status in 2009. Every component including the cabling, electrical conditioning, vibration control, and room treatments were all selected after careful auditioning and confirmation of their sonic synergy with the overall system. Consequently, each addition has advanced the sound in a desirable direction. Many components have come and gone to arrive at its current state.

Roon Nucleus: music server

Lumin U1: music streamer

AQVOX: CAT 7 ethernet cable on all internet connections.

AQVOX: Ethernet Switch (between Modem and Lumin)

Berkeley Alpha DAC Reference II with MQA

PS audio Signature BHK: Preamp

Audiopax Model 88 MK II: Monoblock Amplifiers

Avantgarde Trios with Basshorns: Speakers

Video: Oppo UDP-205: Universal DISC player

High Fidelity Cable Co: For all Power conditioning and line level, and speaker cables

LessLoss jumper cables

LessLoss Technologies: Power Cables to all components via HFC Professional Series power distributor

LessLoss Firewall For Loudspeakers (3 stereo pairs, one for each speaker driver and 1 integrated into jumper cable junction box)

Room treatments:

20 inch ACS stereo tube traps

Corner ceiling traps.

Grand Prix Monaco: Equipment Stands with Apex footers and ceramic ball bearings.

All stand legs filled with ferrous steel shot.

Support shelves upgraded to 3/4 inch glass.

All footers, shelf spacers, and tube dampers are from Herbie’s Audio Lab.
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Firewall Module

Date Added: 07/08/2021 by Nils Berntsson
The C-MARC FW640x elevates the sound to new hights. The predecessor - the C-MARC FW64x, provided excellent transients, 3D perspective and a clear sense of the ambiance of the recording venue.

However, the C-MARC 640x improves on all parameters - an outstanding procuct.

Congratulations on yet another success!
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Firewall Module

Date Added: 04/23/2021 by Jörg Stanislawski
A few days ago i received the new 640 x Firewall module that replaces the 64 x that i used
for my power distributor that only supports the phono amp and my Mc step-up transformer.

I listened to three tracks with the 64 X Module and then installed the new 640 X.
Right away this resulted in a clearly audible sound improvement.

To describe it briefly, i don't want to use the usual phrases. It's like reading a book without glasses and everything is blurry. You put the glasses on and everything comes into focus,
or equivalent, like using a magnifying glass. With the upgrade program there’s no need to think twice to order one.

I don't want to devalue the 64 x module with this, it's a great product, but it's once again incredible that it can still get much better. I'm already looking forward to the upgrade of the c-marc module.
In the meantime, I've reached the point where I can blindly buy any new product from Lessloss if it meets my needs and fits my budget. Fantastic product, again.
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Firewall Module

Date Added: 04/14/2021 by Gerard from France
Delivery of my order had been perfect. After a very limited listening time I am convinced that upgrading from 64x to 640x BRINGS a very substantial improvement in the musicality of my system. Congratulations for this new success of LessLoss and a big thank to your team.
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Firewall Module

Date Added: 04/07/2021 by Stephane
I received the FW 640x. Thanks for the super fast shipping.

It is better than the 64x, for sure. Well done! Better on every dimension, resolution and musicality!
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Firewall Module

Date Added: 04/06/2021 by Jeff
The 640X is amazing. It is on my transport the place where your filters have had the least impact in the past compared to power amp and powered woofers. It is MUCH more transparent with a much lower noise floor and increased space and depth. Increased tonality as well. These changes pale in comparison to the sense of musical expression it allows-even with distortion and poor tone ie Woodstock Live it feels like the performers are in front of you blasting away. The micro-dynamics become macro-dynamics as the singer gains both nuance and dynamic power. Artistic intent to the max! Cannot wait to hear these on my power components.
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Firewall Module

Date Added: 03/26/2021 by John Voloudakis
Firewall for Speakers replaced "black box" speaker filters costing twice as much and, after break-in, made my vintage Sound Lab speakers BLOSSOM to new heights and a never before attained enjoyment of my system.
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Firewall Module

Date Added: 03/16/2021 by Chi Ng
Just added the speaker firewall in my system last week. For the first 24 hours sounded much quieter in noise than before, but at the same time sounded slightly muted and rolled off.

However after 2 days of on and off playing, the system simply blossomed. The soundstage is wider than it has ever been. My system was faster and also had much more noticeable detail then before. The improvement in my opinion is better than a component upgrade.

I am a purist audiophile. Was very sceptical about adding extra pieces of wire into the system. But after hearing the speaker firewall in my system, i cant live without them.
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Firewall Module

Date Added: 03/09/2021 
[LessLoss power distributor with onboard Firewall technology and C-MARC Entropic Process Hookup wire throughout]

I got the new conditioner/distributor today, 6 outlets.
Replaced my conditioner, one that took a long time to find which was in my
opinion the best.

I took a risk, but a calculated one, first, every product from LessLoss that
I tried was WOOW, second, a friend of mine has a LessLoss conditioner.

This conditioner is outstanding, a dream of every audiophile, clean power
with a passive conditioner, without all the disadvantages of an active conditioner.

Well done, again!

Moti (Israel)
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LessLoss History From the Very Beginnings

LessLoss started its business on Audiogon in late 2007. Within the first couple of month, word about LessLoss spread like wildfire among Audiogon members. Here is the feedback received from our clients during our first year of operation. This is from even before we had our own website.

Louis is one of the best in the business, truly professional and very fast production and delivery. I am very satisfied by your superb service. Many thanks.

Positive by Buyer Sebastian (135) on 07-29-2008

Excellent transaction with Lessloss on dynamic filtering power cord. Good communications & fast shipping. A+++++

Positive by Buyer Sennett (45) on 07-03-08

Bought 3 pc's from Liudas in Jan/08. Outstanding product as advertised. Performance is everything and more than I expected. Kudos to Lessloss cable for a great product. Very highly recommended...A+++

Positive by Buyer Phillykid (33) on 06-19-08

Read feedback