KBL Sound product reviews can be found in the tab Endorsements. Below we present selected customer testimonials or comments found in the Web:

"I don’t know what you did with the Extrema Power Cord, but it might well be the best power cord available at its price point — and, even worse for the competition, far above its price point. I compared it to the Albedo Gravity II, the Signal Projects Golden Sequence, and the Echole Infinity.
Extrema is more organic, creates atmosphere much better, and sounds more alive with much more detail. There isn’t a single aspect where I would prefer the Signal Projects cable. Only a fool would choose Signal Projects over this one!
Compared to the Echole: that cable is much more expensive, yet the Extrema has a very similar sonic signature and comes surprisingly close in performance for a fraction of the cost. For a copper cable this should not even be possible — but you managed it. In short: this cable is simply amazing, not just for the money, but amazing full stop.

[...] I connected EXtrema XLR and let it play for hours and hours and did some first comparing with the Albedo Monolith Signature XLR. I will not send back the cable, it might be the very best cable at its price point and above. Compared to the Albedo Metamorphosis signature which is already unique the KBL Extrema is a different level. In a extremely revealing warm sounding system the Albedo works well. In a top-end well balance system the KBL Extrema give body, more ambiance and bigger atmosphere. It is so much more captivating, also a bit more dynamic and overall brings you closer to the real thing. You made something extrodenary! "

"The Extrema power cord delivers a highly resolving and refined sound, presenting both large-scale dynamics and fine tonal contrasts with exceptional detail. The sound that is smooth, rich, coherent, and spatial, with a lively, energetic, and palpable presentation. The cable imparts a natural, analog-like quality to the music, reducing digital artifacts and enhancing the organic feel of vocals and instruments. Bass is deep and weighted, while the overall tonal balance is refined, with improved definition across all frequencies. The soundstage is fluid and immersive, with better instrument isolation and a heightened sense of space and atmosphere. The Extrema power cord is particularly effective at eliminating electromagnetic and radio frequency interference, resulting in purer power delivery and a more natural soundstage." Robert from Singapore

"I have finally tried the Extrema LAN in comparing to Vertere, Dalby Jundo, and Telegartner MP8. The Extrema LAN is very good on its cp ratio, it beats Vertere and MP8 in my opinion, and Dalby Jundo is a very expensive cable which i think they are in the same league, Extrema has a more neutral sound yet musical. I think it is very good on competing with higher price cables.

The Extrema series to me is a must to try, the cp ratio is higher than what I expected and to me it is a great cable to buy too!

Be careful that for Taiko owner, please buy the 8 wires version which costs more but I am sure it worth the price!" Fred from Hong Kong

"I already have one Extrema PC which I bought some time ago to power Lampizator Pacific DAC. Extrema fits this DAC perfectly and there was no long hesitation to buy it. I also have on hand QSA Ultimatum PC, which I’ve compared to the second Extrema, which I borrowed. I use it with Vitus SIA 25 integrated amplifier or/and with server. Both PC are top notch and play with the same league but sounds differently.

QSA sound picture is bolder with strong lower bass, slightly quicker and the expression is more simplified in comparison to Extrema. Extrema differentiates bass, so at the first glance it sounds more delicate. Extrema also gives more decays and “whispers” with more exposed trebles what generates more soundstage layers. Women vocals sounds more life.

Price tag of Ultimatum PC is 2,5 times higher, Extrema has much better price/SQ ratio ( of course YMMV ) and therefore I bought already one and I want to buy the second, when my budget will allow for it." Tom from Warsaw

"[Speaker cable] Red Corona SRX extracts flavors from a well-matched system that we had no idea they exist. The order that this wire introduces is so natural and coherent that I stop thinking about the sound of the recordings, I just listen to the music!

The next feature of SRX, which is revealed after including it into the system, is the lack of favoring any specific frequency. I have compare this cable to the very interesting and perfectly sounding speaker cable from Ansuz, model D2, from the crazy price range of approx. 15,000$. I really liked this cable, but I had to make a few changes to the equipment (replace the tube, change the order of the cables, etc.) to say that this is it. […] With Red Corona SRX it is so much easier because I did not have to do anything. I simply plugged it in and got something extra from the system.
Red Corona SRX is a cable dedicated to systems whose owners know what they expect from their audio toys, and adding such a component raises the bar of presentation to a completely different level. Red Corona SRX is a cable that will not improve a badly sounding system, but in a well-tailored, carefully and passionately assembled system it will be the cherry on top of the audio cake." miniabyr from fb

"I had the pleasure of listening to the Extrema rca interconnect. Congratulations to the manufacturer - something incredible! I never thought that rca could bring so much to music. There are no words for what this cable can do. I can't forget its density, purity, phenomenal smoothness. Another world, another dimension of sound! I have to come to my senses, I can't forget it."

"The EXtrema PC allows my system to play with superb frequency balance and extension; nothing is lacking and nothing emphasized. Compared with my previous setup, the upper treble range does seem slightly cleaner, allowing the highest notes of piano and fortepiano to sound with a radiant purity. There is also an increased sense of smoothness and flow that is difficult to describe and has absolutely nothing to do with loss of resolution. It is quite musically compelling. Soon I forget the mechanical process of reproduction and become absorbed in the tonal beauty and the immediacy of the music. KBL EXtrema does everything you could want from a power cable." Lee from Canada

"It's unbelievable how much good the Himalaya IC brought to my system. The HiFi set suddenly became a set for Music. Many years of building the system were rewarded with peace and fulfillment after plugging in the missing element. Fantastic cable, congratulations on creating such an outstanding element of the audio path.
Instead of subsidizing housing loans or anything else, the government should subsidize purchases at KBL Sound. I would vote for a party with such a program without hesitation :)
Of course, I will not give away the cable. Thank you for the pass to high-end."

"I finally found some time to check your interconnect [Red Corona XLR]. It was worth it. Oh, definitely! Well, I must say that I haven't been so impressed with the changes introduced by the cable for a long time. First of all, the space has changed. What a three-dimensional, what a atmosphere. The stage moved a bit forward, but for me it was just what I wanted. What's more, this interconnect has something, um, tube-like in it. [...] there is so much of it that you can immerse yourself in it. it reminds me of the character of the sound of one of my favorite tubes - 6S33S, i.e. the so-called devils, where the instruments are usually not drawn with such a sharp line, but they have such mass and charm that it doesn't bother me at all in all other categories. Equal frequency range, natural timbre, very natural - typically "copper". Great dynamics, also in the macro scale. Of course, these are just my private observations, but I am enchanted. I did not expect it, because I was convinced that my main system is already "finished", and certainly in terms of cabling and power supply. From time to time I changed something, and each such change brought as many pluses as minuses. After two days, I was returning to the Cardas and quickly realized that this was for the best. And here you go - a surprise."

"It's very nice to listen to a CD with Himalaya PRO [digital]. You can really hear the truth. This truth is pleasant, it doesn't hurt your ears. Congratulations. I compared the cable with the top Hijiri Million HDG-R10. Himalaya won what to do. Unfortunately, I can't afford speaker cables Himalaya and looking for other cables as a compromise - is not a good idea. Such a set of KBL Himalaya with my ML Ethos can be a top achievement for me. You need to have dreams to make them come true. When it comes to digital - it stays with me for years."

"I'm happy with the wires sent to me [Red Corona SPK] , so they will stay with me for longer. The sound has improved compared to the Harmonix HS-101s I have, especially in the better stage arrangement. Also the Red Corona RCA will stay in my system. While the loudspeaker cables mainly organized the stage, the signal cables caused it to expand in both dimensions (compared to the Harmonix Hs-101)."

"A few words about the top KBL Sound [Himalaya] power cable. I can say with my hand on my heart that it is perfect for every element of the system. Very neutral and balanced, and at the same time detailed. Excellent ratings from reviewers. The better the system, the more audible I use it to connect all elements of my system with the top Accuphase electronics. Before that I used Nordost power cords and two Acrolink Mexcell 9300."

"I have a ZODIAC speaker cable. The combination of the Zodiac with the Tara Labs Air2 produced excellent results: the stage receded, the resolution/clarity excellent, the stereo excellent. I have always had the speakers turned outwards, not inwards, to hear the depth of the stage. The ZODIAC caused the speakers to be positioned In general, it is surprisingly very good. I am very pleased - I have been wandering for many years, there was always a but. I congratulate you on your idea, an audiophile idea, and wish you a lot of success."

"I made an intense, whole day test of these top of the line cables Himalaya. I have to admit that I am impressed. In my ultra-resolving system most of them provided great performance. An interesting fact – while comparing these cables with other high quality ones, the digital Himalaya stood particularly out. It delivered better (more all-round) performance than top Acrolink 7N-AD6100 or second from the top Siltech. It didn't fall behind Audio Note cables either despite the fact that Peter Q's black Pallas or PDA Luminist are damn good cables. Himalaya interconnects also didn't let my own cables (Tara Labs Zero Gold, PAD Luminist) to outperform them."

" I had been dreaming about the KBL Sound Reference Power Distributor since January, after reading the High Fidelity review. At that time, the strip seemed to me the perfect product for me. It is a top product, made of first-class components, in a well-thought-out manner. Much more advantageous than the top power strips offered by foreign manufacturers. [...] The power strip makes a great impression, it is heavy and perfectly made KBL Sound replaced the GigaWatt PF-1 strip, which I had been using for several years years. The change in sound that took place after the swap was greater than I could have imagined. All bands improved. Powerful, deep, better differentiated and controlled low end. Dense, smooth midrange with lots of information. Beautiful, open, velvet. The stage is clearly deeper, more diverse, more realistic. However, what is most beautiful is beyond this. Beautiful timbre, organic, natural, calm and a combination of all ranges into one whole. It is something that touches the heart. Which makes it impossible to stop listening despite the indecent hour of the night. The changes I describe are very big, it is important to remember that the KBL Sound strip is many times more expensive than the GigaWatt strip. So it's not about a simple comparison, but about showing that the investment in power supply makes sense. I am very pleased with the change that took place after replacing the slats. Listening to music in such comfortable conditions is a great experience. And this is not the end of my system's capabilities. In the near future, power cables are waiting for replacement, which, I believe, will give as spectacular effects as replacing the power strip."

"Cables melted into the system excellent.[...] We have spotted that the soundstage dimensions grown noticeably as did the sound resolution if compared with previously used power cables. The background became more black as well. Bass became more meaty and better rounded without loosing on speed and control, what made playback more natural. The subjective feeling is that this cables make system sounding more musical and open. The cable alone, without the company’s power bar, focuses a bit more on hi frequencies in my system. Highs are more pronounced, though brighter, slightly more emphasised."

"I have no idea what are manufacturing these cables from, but there is some magic there :) After connecting your Red Eye power cable between my Oyaide power bar (with Oyaide cable to the wall) bass became nice and crisp – what a spectacular difference ! Speaker cables didn’t make significant different on bass, but it is not needed in my system. What they did however, they somehow managed to filter this transistor harsh feeling, making music more... musical. All became more natural, without any loss or compromise ;) The changes are not subtle, they are evident. There is no need for further listening tests, it remains only to listen :)"

"I had a great pleasure to listen to their cables as well. You can ask to borrow them as I did. It is really worth doing to find out. Maybe these are not most universal and as everything are system dependable. But for sure they are neutral and sometimes show deficiencies in the rest of the set up. In other words, they do not mask anything. I think that the most important feature of these cables is openness and naturalness (sounds organically true) and their ability to disappear completely from the signal path."