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Firewall 640x provides "next level insight" - "the best aspects get even better"

June, 2021, author: Werner Ero
[This article appears in original Dutch language in Music Emotion print magazine.]

"...a very different and special product."

"...a startling increase in ease, tranquility, fluency, relaxation and integrity."

"...you are closer to the actual intent of the music itself and much less concerned with reproduction."

"Significant strides have clearly been made here."

"The Firewall 640x shows very well that the blow with the brushes on the snare drum and the bass lines played by John Illsley sound completely natural and more importantly, that all band members really audibly playing together!"

"With the Firewall 640x really new insights arise. It sounds more intimate, involved and colorful and when I equip all the devices in my chain with these wooden devices, there really is next level insight into this beautiful album. Magnificent."

"...being able to disconnect even further from so-called 'hi-fi' listening and thus make even better contact with the intention of the performers."

"...the almost complete disappearance of the previously observed rounding that strikes me the most."

"This Firewall 640x makes music anything but soft and soft. No, what I mean has more to do with the observation that most hi-fi equipment applies a subtle (or less subtle) 'hard' edge along the contours. Think of it as a make-up eye-liner. The Lessloss 640x removes this line and thus shows the person or in this case the music in a more natural way."

"The mains pollution is dealt with in a more natural way and as a result you can get closer to the performers. As far as I'm concerned, the strength of this product lies in more and deeper musical satisfaction in the long term."

"It is downright clever and intriguing how Louis Motek and his team time and time again, with almost insatiable hunger, an increasing level of knowledge and enormous motivation, manage to improve their existing designs time and time again. Anyone who has been acquainted with Lessloss products before will immediately recognize the hand of the master here as well. But on a much higher and more refined level."

"This is another one of those rare products where you miss them when you take them off the chain."

"It is also clearly a long-term solution that you will appreciate more and more and where the 'magic' takes more and more possession of the user, as it were. A fact which is caused on the one hand because the audio set will perform more easily and smoothly, but also because of the increased naturalness with fewer artefacts that invites longer listening sessions."

"The beloved reproduction of your own beloved audio system remains completely intact and recognizable. Only then further stripped of clutter in the mains and in terms of tuning with an intriguing ear for the best aspects that get even better."


Original review in Dutch
Automated English language translation
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"Onset of treble glare native to your system will delay or disappear altogether."

April, 2021, author: Srajan Ebaen
"Sven Boenicke of the eponymous speaker house and Martin Gateley of sound|kaos have embraced LessLoss Firewall tech by optionally installing it inside their speakers. That's quite an endorsement of its efficacy."

"Clear changes."

"Made the sound darker, softer, denser, moved it forward then dialed up contrast."

"An unusual twosome, namely higher contrast plus softer darker density. Those don't often go together. Here they do."

"Without losing resolution but rather gaining separation, the treble feels smoother, less lit up"

"Contrast/resolution improves."

"The progression from zero to four 640X to four C-Marc Entropic was one of growing wood. That's not a lame locker-room quip but a description of how cello and piano transformed from metallic strings to resonant tone-wood bodies."

"Taking the [multiple Firewall 640x'es] out again was - really bad by comparison."

"The overall sound acquired lengthier decays for richer tone and removed the edge burrs."

"More density whose gravitational aspect also felt darker."

"More audible decay action whose overlap with following transients wrapped them in fine reverb gossamer to seem softer. Simultaneously subtle venue cues floated up into awareness."

"A cleaner purer treble followed the same trend."

"Worked like a massage therapist honing in on trouble spots."

"It became dead obvious: microdynamic range had expanded."

"Gave melodic arcs more expression."

"The instrumentalist's or singer's small inflections and accents registered as deeper so had more wiggly life and less flat-lined dynamic evenness.
As you play really loud, the onset of treble glare native to your system will delay as well or disappear altogether."

"A pair of [C-MARC Entropic Process Firewall 640x] on the first connection strikes me as similarly potent as a Firewall for Loudspeakers on each speaker. So it's fair to say that the Firewall 640X C-Marc Entropic is equally effective to grandfather into the earlier award."

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"The most analog type of its kind I'm aware of"

March, 2021, author: Dawid Grzyb
"Although it's no news that sonic results scale up along with signal clarity, I'm aware of no other company as fanatical on this specific count as LessLoss."

"LessLoss Echo's End Reference isn't a regular DAC but the most minimalist hassle-free machine of this particular sort"



On the Echo's End Original version:

"Music presented in effortless, fluent and organic fashion emerged as the Original's highly valuable key attractor, but additionally augmented via generously euphonic expressiveness and enjoyable freedom from digital tint and harshness, which back then I took as its very much vinyl-like charm."

"wasn't overly thick, sluggish or bloated, but pleasantly earthy, organic"

"emotionally engaging and focused on quality, sensuality and maturity instead of quantity, exposure and abnormal twitchiness, which led to a fatigue-free pleasurable ride."

"always felt pleasantly gravitational and cohesive but never overdone or extreme in any way."

"its enchanting, calm, euphonic and composed voice was free from fuzz and dilution"

"tastefully executed pleasant undisturbed music flow"



On the Echo's End Reference version:

"These extra muscles effectively position today's DAC far higher on counts relevant not to expressiveness or charm but sheer power, RPM, elasticity and insight. Speaking cars, think of this product as a large safe SUV that just underwent a major engine rework to net twice the horsepower. The ride's as comfy as ever, but now that sleeper disguised as a family drive can do 0-60 times fast enough to leave many sporty sedans in the rear-view mirror."

"The Lithuanian was very capable on bass reach and control, but also managed to inject extra weight and roundness into this range without penalizing its agility or might"

"This DAC knew well how to charm and slam at the same time, and that's one of main reasons why I see it as substantially more composed and clearly better versus the Echo's End Original."

"The Echo's End Reference rendered virtual sources inside smaller more distant frames, was a fair bit denser and had its backdrop darker to elevate ambience, to accordingly feel more atmospheric and invite me there to its own place."

"The LessLoss had the highs suspended about a row deeper yet pleasantly substantial, lingering in air for long and all the while perfectly visibly, which was quite the achievement considering its natural aspiration for chocolaty flavor."

"...more sedate, mature, calmer and picturesque."

"Clarity, accuracy, tonal generosity and substance are traits that don't usually match in equal proportions, let alone having them all this pronounced. Neither the Echo's End Original, nor AMR DP-777SE, Lampizator Golden Gate or any other DAC I'm aware of managed to blend all these features just the way today's Reference specimen did. I strongly think that its ability to do so this potently and have bass in check to slam hard upon demand is its highest most unique trait. After all, how often do we get to hear a naturally earthy D/A machine that's also very capable on articulation and dynamic might?"

"this DAC is the most analog type of its kind I'm aware of, it has a very strong personality of its own"

"...injects that particularly captivating sonic moisture, elegance and maturity into setups without compromising on clarity and agility. If you fit that profile and financially can swing it, then the LessLoss Echo's End Reference might be the last DAC you'll ever buy."



Hifi Knights
6moons
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"Improved the sound of every speaker I used during the review period."

March, 2021, author: Mark Blackmore, music educator
"By removing a previously unnoticed noise intruding on the music, there was now a quietness, a focus, a relaxation to the sound that was instantly recognizable, even when heard from another room."

"With the Firewalls installed, familiar recordings displayed newfound reverberation trails around instruments; treble notes were purer yet still exciting, and percussive attacks were quicker, with increased force. Instruments and voices that I had previously thought of as well reproduced by my system were now more truthful in timbre, their image placement on the soundstage was clearly drawn, and ambience was greatly enhanced."

"Before installing the Firewalls, I had assumed that the treble range would be affected the most, but in my system the midrange also benefitted from the Firewall's noise reduction."

"better recognition of lyrics."

"saxophone tone was also improved"

"I could now easily follow his clarinet"

"and have a newfound admiration for his performance."

"When a product makes such an immediate and obvious difference in my system, I'm curious to hear if that is due simply to synergy with my gear or if the results can be duplicated in other systems. So I arranged to listen to the Firewalls in two friends' systems."

"After the Firewalls were installed, the applause at the beginning of the track had more definition, with individual claps apparent instead of a wash of sounds."

"The Firewalls eliminated the added harshness from his voice, but kept the treble true to the microphone's sonic signature. The resulting sound was much closer to what I imagine is the recording's true sound, more like listening to the feed from the mixing board and less like hearing it through the PA. This was a great improvement to an already fine system."

"the Firewalls did a fine job of cleaning up the treble and improving the separation and clarity"

"After connecting the Firewalls, not only was the sound more clearly heard, but the improved clarity revealed that it also panned from left to right in a straight line."

"the Firewalls improved the focus and clarity for a clearer picture of the performers."

"The Firewalls delivered full frequency response without dulling or blunting the leading edge of treble attacks, and that held true with every speaker I heard."

"this track now sounded like a well-engineered studio recording with lots of layering and spotlighting of solo instruments."

"the Firewalls produced a more accurate representation of the recording"

"the treble was considerably cleaner."

"there was greater differentiation between each singer, as a unique voice in the recording's mix."

"The LessLoss conditioners took this system up quite a few notches in that respect. Later that night, Chris texted that with the Firewalls removed, the tracks we had listened to had lost their 'reference quality.'"

"In each case, the Firewalls improved resolution in the upper midrange and lower treble. I was able to follow complex musical lines more easily and have discovered new low-level information in material I thought knew very well."

"the Firewalls can be daisy-chained in series for even better performance, and that proved to be true. The soundstage grew deeper and wider, with the treble becoming even smoother and sweeter."

"it produces an addictive result."

"It needs to be viewed as an important addition to an audio system, and it improved the sound of every speaker I used during the review period."

"always musically significant, accompanied by greater resolution that extended well into the midrange. The LessLoss Firewalls ensured that I heard all the music my system was capable of."
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