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Published LessLoss Reviews Now Number Over 727

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Jam Gloves

Date Added: 05/31/2026 by Jacob HiFi Connect
Disclaimer - I am (Jacob from HiFi Connect) the LessLoss distributor in Israel.
All tests done with Headphones and a very expensive setup that includes much filtration.

I just got my stock last week and only today got the chance to test the Gloves...
Who ever knows me - knows that I'm very sceptical and test ALL my new equipment.
I'm very strict.. and if the product is not up to my standards - I always return it to the manufacturer!!

I have many "Filters" and sound improvements that I use in my demo room and sell. I have also my own product with 3 patents that also improves the sound of ANY device.

So... if you read so far, I WAS very sceptical. I thought I need to clear my mind from the daily errands and totally concentrate for the testing task.

My favorite song for testing is "All By Myself" performed by Sheryl Crow. It starts with a piano chord that repeats itself for several bars, then goes to the vocals and the bass line...

With those 10-15 sec you can feel and hear the separation and pronunciation of the instruments and as these are kinda repetitive bars it is very easy to concentrate on the sound and detect the difference when testing equipment.

I was preparing myself for a long session .... cleared 1 hour from my schedule for this.... and was very "disappointed" :) when it took me only 3 minutes to say... "WHAT THE FXXK"!!

Before the Gloves, the piano notes made a kind of resonance in my head (headphones) .. it was like an interference of sorts... it all sounded excellent as it was with all my other filtration.... BUT (!!) after mounting the Gloves - all gone!! I had this clear and relaxed feeling hearing exactly the same notes, exactly the same song bars... but the separation became bigger and as in the product description - all became quiet .... hussshh ... silence.... we are hearing MUSIC here!!

This little gadget blows my mind!!
Its effect is totally visible/audible!!

Yeah... it is not cheap... but WORTH every $ that you spend on this!!

Highly, Highly RECOMMENDED!!!

Jacob.
HiFi Connect
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Giant Steps

Date Added: 05/28/2026 by Henk ter Meer
The Giant Steps and Jam Cloves are working excellent:

More space between the instruments and singer(s), better brightness, very nice smooth high tones, much better low tones and very fine musical 3D sound, it makes me very happy!

With kind regards,
Henk
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Jam Gloves

Date Added: 05/28/2026 by Henk ter Meer
The Giant Steps and Jam Cloves are working excellent:

More space between the instruments and singer(s), better brightness, very nice smooth high tones, much better low tones and very fine musical 3D sound, it makes me very happy!

With kind regards,
Henk
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Jam Gloves

Date Added: 05/27/2026 by Kirk
I just slipped six Jam Gloves over plugs and was shocked at the difference in sound quality. I have no idea how these sleeves work but I assure they make a very audible change for the better.
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Jam Gloves

Date Added: 05/26/2026 by Luigi Fiorani
[Machine translated.]

Ciao Louis,

The Jam Gloves arrived this afternoon here in Australia. After 26 days of waiting. I took 2, because I have 3 of your cables, even not state-of-the-art ones, but they sound good. As per your advice they are connected to 2 of my Power Distributor and the third to my pre valve. I was very doubtful about these 2 pieces of plastic that cost a lot, you have to acknowledge it. I put them on the IEC of the Power Distributor preparing not to hear anything different, as warned, at least for a week.
I have a very vintage system, but very efficient in tri-amplification, with Taylor Made preamps, where in addition to having the 3 C-transformers with oriented grains, the pilot valves are not the usual ECC, but 4 Hitron NOS VT 137 power valves, rectifier 274 replica W.E. of the Pasvane, with 2 ends an AR D 50 with 4 KT88 Linlai for the mid-highs and a Krell KSA 100 S class A, for the bass and the sub that works below 50 hertz in class D 180w.

In the digital sources that is the one I listen to the most, I won't give you the list, it's not necessary, but I tell you that I also have an atomic Master Clock with Rubidio vapors.

Everything is sent to 2 JBL 4343. You'll think: but why is he telling me all this?

To tell you that - I WAS WRONG - and that as soon as I turned the system back on, I didn't have the psychoacoustic feeling of expecting changes, but damn moments I fell out of the chair. As soon as I turned the system on with the Jam Gloves, at the beginning it was the feeling of having put on a reverb unit, then going on with the listening, even now that I'm writing, my dynamics, that I've always had, has increased, and song after song, I find I decrease the volume. But this is nothing, the black background that I have amazingly with the Master Clock, has increased dramatically, everything is literally crazy, I still can't believe what I listen to. A cutting of the tools that leaves you speechless. I don't want to continue because then you'll get too drunk off this.

I can buy 2 more and I would put them on the IEC of the pre and Clock. What do you think? You are great, congratulations to your researchers. Anyway they are worth what you ask for (maybe more). Salutations and congratulations.

Thank you. And I look forward to hearing from you soon. Let me know how I should do, for the next order. (Sorry I have used the translator.)

Luigi
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Jam Gloves

Date Added: 05/24/2026 by Joerg Stanislawski
I received the Jam Gloves on Thursday. I started by installing two of them:
one for the CD drive and the other for the DAC. The striking difference was immediately audible. It’s unbelievable – I pick up a Jam Glove and wonder how this thing could possibly have any effect on sound quality. After all, it doesn’t change anything about the connection between the cable and the plug. I installed the next two on the pre-amp and power amp. And again, there was a noticeable improvement. The last two went into the wall sockets where my power strips are plugged in. And, well, what can I say, it got much better again.

LessLoss products, always a win, never a disappointment! Wonderful, thank you.
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C-MARC Grounding Cable

Date Added: 05/09/2026 by Serhiy
First of all, I would like to Thank You for the great products you have designed, namely the C-MARC cables. They have truly made my system, I couldn't and still can't believe how a cable can make such a HUGE difference on the grounding path, not even the direct signal path!

The C-MARC cables are legit!

I would like to share with you my story.

So here's my story, since I've been working on my electricity for a while now, my latest journey was the Grounding stuff that a lot of you might think is Snake Oil, but read on.
After my Power Conditioner (Vinshine Tai Hang), I got myself a GroundMaster City Ultra (Henceforth: GMCU) as the grounding box, since I've had experience with Puritan's PSM156 box, The PSM156 is a great Power Conditioner as well, I didn't really "upgrade" it to the Tai Hang, but there was some buzz with the Tai Hang and I wanted to hear it for myself and I've had the perfect opportunity to exchange the PSM156 for a dedicated power line. Anyway, the story is not about the Power Conditioners but the Grounding stuff.

I connected at first my GMCU to Tai Hang and immediately heard a drop of noise floor and better dynamics and everything. Then after some more upgrades (Power cables) and some burn in things were looking and sounding good.

Then I decided since GMCU is such a great device to add to it the RouteMaster (Also from Puritan) so I can add some more grounding work to the rest of the chain and connected it to May and Astraeus, while there was even more drop in the noise floor, dynamics suddenly DISAPPEARED. with that I tried to play around and also change my tube, I've had the Ei Yugoslavia in and change it to the Tesla PCC88, that actually brought back a bit of the dynamics but still not enough, later within 4 days I've had it all back things locked in, sound became sweeter, more open and with dynamics. Then the Puritan/Furutech dealer also recommended to change the stock Puritan grounding cables to LessLoss small cable with Furutech/AECO connectors, after some thought and a bit of research I decided to go for it, wasn't too expensive (Even though he warned me it would be expensive), anyway, today I got my cables though there was a mistake in the connectors but 2 cables out of 4 I managed to connect just fine. Connected them and expected a drop of sound quality or at least it starting from the same point I left, what happened was that it actually stayed the same and even became better from first impressions.

A few tracks later, I cried, I cried hard, while listening to Immanis, From content on Youtube, I finally heard great sound, the first wow moment was from the bass coming from Geoff Castellucci - The Sound of Silence track, it was so impactful and authoritative and full bodied... then suddenly a few fairly flat tracks, then another great track "O Death" by The Wellerman that had great dynamics and BODY to voices. Then things started rolling from there non-stop, with all the details, sound was coming out of different places with mostly pinpoint accuracy, I could hear sounds far out in the corners echoing out of the black background, voices were coming from black background going around the stage like completely 3D, that was all from Youtube.
I cried so hard I had to stop the music try to understand.

Music was finally reaching to me emotionally.

TLDR: Immanis is amazing, but even if you have the best DAC or Amp and you don't feel like it's doing it for you, you must work on your Electricity and (Signal) Grounding. It's not snake oil, not even close. It will make you cry.

Best Regards,
Serhiy
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Firewall Module

Date Added: 02/11/2026 by Jens Thorsen
Firewall 640x Stellar review

"Black Diamonds" with Stellar Performance

I have now been using five Black Diamonds (aka Stellar Firewalls) in my system for quite a while and would like to share some thoughts about them 🙂

I started out with three units, one in front of my LessLoss Distributor (where it replaced a C-MARC 640x Entropic Firewall), one in front of my streamer, and one in front of my DAC/preamp. That setup clearly showed what those black gems do - improved openness, clarity, detailing, soundstage, etc., the C-MARC 640x Entropic Firewall on steroids!

But with only three units, I began wondering if I had them in the right places ...

My "source chain" is completely digital, starting with a standard router (supplied by our internet provider) - well, it's not really that "standard" anymore, as I replaced its switch-mode supply with a good linear power supply that feeds DC to the router via a handmade cable made with LessLoss Large wire. Both the LPSU and the DC cable I made gave substantial sound improvements. The upgrades at the router end were all done quite a while back and were later supplemented with a C-MARC 640x Entropic Firewall and a Prime cable to feed the router LPSU, offering yet another sound improvement.

Next down the line comes my audiophile switch. It has a built-in LPSU and is fed by a C-MARC Classic Entropic power cable and a C-MARC 640x Entropic Firewall.

After the switch comes the Stack Audio Smoothlan Regenerator, which is powered by an external linear power supply. The LPSU is fed from the LessLoss Distributor via a Groneberg Quattro power cable.

At the end of the source chain, I have an Innuos Zen Mk3 streamer (with some modifications, like internal LessLoss Large power wiring). Power to the streamer is coming through a C-MARC Entropic power cable, and (as mentioned above) a 640x Stellar Firewall.

Considering that all the power supply improvements in my "digital" supply chain had given me improvements in sound quality, I started thinking that it might be worth trying out a Stellar Firewall in front of the router's LPSU. But there was a problem. All three Black Diamonds were in use. Also urged on by a friend, who had tried a Stellar Firewall on his own router LPSU, I decided to move the Stellar Firewall on my Distributor to the router LPSU, just plugging the Stellar power cable from my dedicated wall outlet directly into the Distributor instead.

Frankly, because I was removing the Firewall from my Distributor, I was expecting a so-so result from adding a Stellar Firewall to the router LPSU. However, doing this was a marked improvement!

After that improvement, it was clear to me that the so-called "digital" supply chain was much more prone to disturbances on the power side than I had imagined, and I subsequently obtained Stellar Firewalls for both my audiophile switch and the LPSU for my Stack Audio SmoothLAN Regenerator (got one from MusicMagic and one from another friend, who had "overdone" the number of Stellar Firewalls that he needed). Each Stellar Firewall added was a clear improvement (and so was replacing the Groneberg power cable with a C-MARC Classic Entropic power cable 😉).

In my opinion, there are two important takeaways here: 1) The importance of removing disturbances from our "digital" supply chains cannot be overstated, and 2) those Black Diamonds must be as close to each unit as possible for best effect (no news for you on that one 😊).

It should probably also be considered that there are already very capable Firewalls inside the LessLoss Distributor, and that my Distributor also has 8 x BlackGround modules installed.

Keep up the good work!

Jens
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Firewall Module

Date Added: 11/23/2025 by Jeff Wolff
I have 4 of the new 640X Stellars in my system and they provide far and away the greatest increase in sound quality I have ever experienced. The bottom line is far greater musical enjoyment, natural tone and better timing and coordination. I am considering upgrading from a company's $7K DAC to their $23K Reference model. If you told me what the Stellars do is the upgrade I would consider it money very well spent. Obviously the Stellars cost a bit less! This is in comparison to the previous 640X Entropics. Best LessLoss product ever and not by a little and that is saying quite a bit.
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Firewall Module

Date Added: 11/11/2025 
A couple of days ago I installed one of the new Firewall 640x Stellar for power on the linear power supply driving a small LAN to Optical media converter. The media converter sits right after my internet router and drives 30 m optical fiber cable connected to my audio LAN switch.

Tonight, for the first time, I am listening to some music I know well. Although, I know from previous experience that you always bring out amazing products, this new exiting firewall blows my mind! I was just about to upgrade the cables in my subwoofers from hook up wire small to coax, but now I am reluctant to turn of the power as music now flows in a way I have never experienced before🎶🎶🎶🎶. Applauding in your direction 👏. Hopefully it will not be too long before you can produce them in larger quantities.

Oups - another one just slided in on the psu driving my router. More to follow....
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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

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