October 2026

World Premiere Review!
LessLoss Jam Gloves Review: A Surprising High-End Audio Upgrade For Resolution And Transparency
Rick discovers how LessLoss Jam Gloves enhance power cable performance, delivering greater transparency, improved resolution, and a more lifelike musical presentation in a reference-level high-fidelity audio system.
Review By Rick Becker

   When I received word about the new LessLoss Jam Gloves, there was very little information about them, but I've been so impressed with LessLoss products that I immediately requested review samples. They looked like devices that somehow kept power cords from drooping or falling out of components or wall outlets. What a great idea! And surely I could write a review in no time at all.

"If the glove doesn't fit, you must acquit."

When they arrived (without instructions or anything published about them on their website), I was perplexed by the grey plug that blocked one end LessLoss' Jam Glove during my initial review moments. It was firmly affixed to the intricate (and possibly delicate?) Jam Glove. The last thing I wanted to do was break one. Louis Motek quickly assured me that it was perfectly OK to push the grey spacer out from behind with two thumbs or something like a broom handle. They were stuck on pretty tight, but it was helpful to learn they were not fragile. I found it was necessary to use significant force to slide them on my Synergistic Research Atmosphere SX power cords, which measure 1.5" (38mm) in diameter. As more information became available on their website, I learned LessLoss warns users not to force the Jam Gloves over the AC plugs of your power cords. There is minimal flexibility with the thin plastic rods, and virtually no flexibility with the large circular pieces at each end. I later learned LessLoss was developing Jam Gloves in a variety of diameters.

While the Jam Gloves were tight on my Synergistic Research AC plugs, I didn't dare push even harder to fit them to a couple of Audience Front Row Reserve power cords I have on loan, which was disappointing, as I was using these expensive cords on my DAC and Preamp. The excellent Tiglon White Tiger power cord was an easier fit, and I used that power cord on my modded Sony ES CD player, which I use solely as a transport. Fitting the Jam Gloves over an IEC connector at the other end of the power cord was only a problem with the Audience cords. Louis suggests the IEC end is the most effective position for the Jam Gloves, but I had to go with what fit.

A bigger problem came with the AC cords going into my Synergistic Research PowerCell 14 (or any duplex outlet), as the use of a Jam Glove on any duplex outlet precluded the use of the other outlet by anything other than a small molded plug on a cheap AC cord. If you're considering the Jam Glove at all, it's unlikely that you use such inexpensive cords. The problem also occurs if you try to use Jam Gloves on adjacent duplex outlets on most US power conditioners. The PowerCell 14 has 14 outlets divided among three zones for power amps, digital sources, and analog sources. I was only able to use the Jam Glove on the AC plug of the Tiglon White Tiger cord.

The Synergistic AC power cord for the PowerCell 14 itself was a different story. For the AC plug, I had to remove the power cord for the Synergistic Active Ground and put it on a secondary dedicated line, leaving just the power conditioner plugged into the Audience Hidden Treasure 30A dedicated line. Maybe that was a good thing? The other end of the power cord has a Neutrik 32 Ampere PowerCon connector that locks into place on this PowerCell. It was a little tricky wiggling the Jam Glove over the sliding locking lever, but the fit was ultimately comfortable. Hang on to this application of the Jam Gloves, as I will come back to it later.

My final AC application for the Jam Gloves was on the IEC end of the Synergistic power cords for the AGD Audion Mk III monoblocks that drove my Acora speakers. While these fit nicely on the IEC plug, they blocked access to the closely adjacent rocker switch to power the amps. This required backing the Jam Glove out a bit so I could get my finger in to turn the amps on.

I thought the Jam Gloves were only for power cords, but over time, I learned they could be used on smaller cables as well, so I also tried them on my Tiglon digital cable and the Tiglon speaker cables at the speaker binding posts.

The Great Discombobulation
When it rains, it pours. And so it was with review samples. I tried the Jam Gloves out and quickly learned they had nothing to do with keeping your cables from drooping. I tried listening, but nothing obvious jumped out at me. My rig is already at a very high level, though not with über-expensive components—just a lot of savvy tweaking of very compatible gear, including LessLoss BlackGround Power Base and BlackGround Speaker Base (for loudspeakers), and LessLoss Giant Steps footers. Perhaps I had already conquered what the Jam Gloves were designed to fix?

I had already designed an extensive listening protocol to evaluate them, but it would take a long time, and I had four other reviews to complete on hand: the Bayz Audio Time Corrector, Synergistic Research Holographic fuses, Tiglon Cables and Tough Nut footers. A two-way monitor arrived that wasn't ready for prime time, and another speaker I was hoping for never materialized. It could have been worse. I was worried that the BlackGrounds could have been interfering with the Jam Gloves, so I pulled them out of the system. I still wasn't hearing what the Jams were supposed to be doing. So with the four reviews out of the way, I reinstalled the BlackGrounds and buckled down for serious listening.

The Listening
Part of the problem, I thought, was that the rig was sounding so damn good I simply couldn't figure out what the Jam Gloves were contributing. I'm not a classical music fan, yet I kept coming back to a compilation CD of classical music my good audio buddy, Tom Lathrop, had put together for me. I was enjoying the music immensely and thinking it was all due to the Bayz Time Corrector, the Synergistic Holographic fuses, and the Tiglon cables.

I had two cards left to play. One was to pull the BlackGrounds out of the system again and wait another week for their residual effect to dissipate before removing all the Jam Gloves in hope of perceiving what was missing. The other was to simply pull all the LessLoss Jam Gloves out of the system at once and see what happens. In the interest of time, I chose the latter as I was feeling guilty about taking so long to get to this review. There was already a page full of glowing customer comments, and a video testimonial by two pro-audio guys on their website, and Louis had promised his loyal customer base that a review was forthcoming.

The "aha" moment came slowly. I had listened to two selections on the classical compilation CD at concert level with 102 dB peaks and stripped the Jam Gloves out of the rig. (That would be both ends of the power cord to the Synergistic Research PowerCell 14, both ends of the Tiglon White Tiger power cord on the CD transport, the IEC ends of the Synergistic power cords to the AGD Audion Mk III monoblocks, and both ends of the Tiglon digital cable.) I then replayed the two classical pieces.

Upon removing the LessLoss Jam Gloves, there was an obvious decrease in resolution. The music and the soundstage became more homogenized, and the orchestra was more recessed. The orchestra that sounded "live" had left the room, replaced by a recording of their performance. It was the delightful presence of the musicians and the music filling the room that was replaced by an image of their music compressed behind the speakers. It had been the closest to a live performance that I had achieved in my room, and the magical effect of the Jam Gloves was the principal contributor to this experience. The benefits of the Jam Gloves were the inverse of the degradation I have described here. How could I have missed this significant contribution? I'll blame it on the rapid addition of my four previous reviews, each delivering very positive, delectable results. But once I achieved the "aha!" experience, the benefit of the Jam Gloves could not be unheard.

I could break the result down into the usual descriptions of dynamics, tone, bass, midrange, treble, etc., but they would all be less significant, if not irrelevant, to the very impressive contributions of resolution and transparency that allowed such an intimate connection with the music. Since much of the music I use for critical listening is very familiar, it is rare that I get goosebumps, but when I stepped outside my typical fare, such as tonight when I listened to a Schubert piece for violin on NPR, the fine edges of the notes teased the hairs on my body from my legs up through to the back of my neck.

Where To Install The Jams
As I alluded earlier, there was a very impressive improvement when Jam Gloves were applied to each end of the $3500 standard power cord of the Synergistic Research PowerCell 14. That power conditioner can be upgraded with a much better power cord for an additional $4500, or the flagship power cord for an additional $8500, but I doubt it would be any better than adding a pair of Jam Gloves for $364 each. The fact that the power conditioner feeds all my other components makes this a logical first point of application. This, of course, assumes they will fit.  Other cables would not take the Jam Glove at all. The inside diameter of the rings of the Jam Gloves is given as 41mm, but the 40 thin rods separating those rings do not have sufficient flex to allow a plug larger than 38mm. A larger version with an inside diameter of 45mm is listed on The Cable Company website, which should fit a wider selection of power cords, but still, I would subtract 2-3mm from that 45mm size, especially if you don't wish to scratch an expensive carbon fiber housing.

Applying Jams to your front-end components is the next logical step, just as it is with adding higher quality power cords or specialty fuses. In working with cable reviews recently, I was surprised to discover that improving the AC cable to my CD transport was as important, if not more important that upgrading the power cord to my DAC. I used the excellent Tiglon White Tiger power cord on the transport, and I was able to use the Jams on both ends of this cable. I started with just the IEC input end, and it contributed a little more transparency and resolution, plus it made the music more natural-sounding—less like a recording. Adding another Jam to the AC plug end of the cable made the music a little more real, along with similar gains in transparency and resolution. Remember, these were gains on top of the very impressive gains already achieved with the power conditioner.

Next for this review, I added LessLoss' Jam Gloves to the IEC input end of the Synergistic Research power cords to the AGD monoblocks. An electric guitar jam became more highly resolved, revealing individual notes without smearing that were obviously sweeter than before. With more resolution, there was more tonal color in the bass, and more inner detail throughout the audible spectrum.

Going back to the front end, I added Jams to both ends of the digital cable with a slight improvement. Here, I wondered if a smaller version that fit tightly to the RCA connector would be more effective. Likewise, the Jams produced slight gains near the speaker binding posts where the two thin leads easily slipped through a single Jam. I dare say the addition of a Jam Glove to the antenna input of my tuner added a touch of resolution and transparency, though this is not a high-value application unless FM radio is a principal source for you. On Hearts of Space, a syndicated program with ambient, electronic, world, new age, and experimental music that preceded the classical violin piece, I could not tell the difference. The most beneficial application is on the ends of power cords.

If smaller versions (as well as the slightly larger version mentioned above) become available, it would be worthwhile to compare them with the original size, particularly with so many USB cables in use these days. My results confirm the value of the technology with power cords, but I could not evaluate the Jam Gloves on everything from source to speakers at one time. I suspect there would be continued benefits just as there are with adding better cables, footers, or aftermarket fuses throughout the system. It is also likely there would be diminishing returns.

What Is This Thing?
I received samples from the first production run. They came in small cardboard boxes, individually wrapped in little zip-lock plastic bags, not in velvet bags with gold embroidery. Lithuania borders Belarus and Kaliningrad, you will recall, and the situation in these troubled times is more pragmatic. (Louis shared that a "stray" drone from Belarus was downed 21 miles from his town.) The Jam Gloves looked like some new part for a Lego set. Whether the Jam Gloves somehow deal with the electric field that runs along the outside of cables, or are designed to work at the physical contact point of the cable with the component where vibrations are caused by the flow of current, I don't know for sure.

A product description on The Cable Company website describes LessLoss' Jam Gloves as restricting micro-vibrations in the end plugs. I suspect this is correct because it is the same claim used by Tiglon Audio Cables, whose cables are wound very tightly and use a magnesium foil to further dampen micro-vibrations. I found these cables to have excellent resolution and transparency, just like the Jam Gloves. It doesn't hurt to ask about proprietary information if you don't expect an answer. And I didn't get one.

On the website, Louis goes into a long explanation of the unusual burn-in process with the Jam Gloves. None of this information was available to me at the time, and since the Jam Gloves are made of plastic, I wasn't expecting any burn-in. I put them on the power cables where they would fit, and went about working on other reviews in progress. Consequently, I can't confirm what Louis has said about burn-in. By the time I finally recognized what the Jam Gloves were contributing to the music, they had completed any kind of burn-in (or break-in) one might expect, and the music was sounding very, very good.

Value
This may appear to a casual observer to be a difficult assessment. To look at the Jam Glove, you see 40 thin, bowed plastic rods glued into two plastic rings. The waistline is wrapped with what looks like Saran Wrap and covered with a black rubber band with the company name and "Jam Gloves™". What is less obvious is that the material is technical plastic that is highly engineered in specialty labs to have specific characteristics. Think "Moon shot." This is not your everyday polyethylene, polypropylene, or PVC. I expect there is also a lot of tedious hand labor in putting the Jam Gloves together. I put together dozens of plastic models of military aircraft and Navy vessels as a cutting-edge Baby Boomer after World War II, but I doubt the Jams would be popular as a DIY kit. But still, $364 each may seem like a lot to many people.

There are quantity discounts of 5% for 3+ and 10% for 6+, so maybe you could team up with a few friends to try them out. In fairness, when ordering directly from Lithuania, the price includes shipping, and UPS deals with US Customs and will inform you of any duties due. LessLoss also offers a 30-day money-back guarantee, albeit with a 15% restocking fee, which includes return shipping. LessLoss also arranges the return shipping for you. Their website states that the customer pays return shipping, but LessLoss has been arranging and paying the return shipping since the 2020 health situation.

Additionally, their products are sold through The Cable Company, and Atelier 13 Audio in Nashville.

When you consider the value of its performance, the LessLoss Jam Gloves take center stage. I don't know any audiophiles who would not appreciate greater resolution, more transparency, and sound that feels like the musicians are in the room. You can chase $100,000 speakers, amplifiers, or DACs, and still not come home with something that improves the system you already own like a trio of Jam Gloves for $1100. (That's 1% of the cost of those speakers if you're reading this late at night.)

Summary
Aside from manufacturing a line of very smooth-sounding cables, Louis Motek has come up with some very novel technologies to deal with the ambient noise in our rooms and components. The BlackGround Power Base, BlackGround Speaker Base (for speakers), and Giant Steps footers continue to work their magic by removing noise from my music. LessLoss' Jam Gloves, however they may work, join that pantheon of tweaks, bringing the music even closer to the experience of live music. It took me a while to recognize their contribution, but once I removed them from the system, they were dearly missed, and I could not un-hear the resolution and transparency they brought to the performance.

The caveat here is that my rig is populated with a lot of additional tweaks, as well as quality cables, an expensive power conditioner, and a 30A dedicated line. Without those established enhancements as a baseline, I might not have achieved the exquisite results I heard with the LessLoss Jam Gloves. But system building is just that—a building process. No one component, cable, or tweak has brought me to the level I have achieved with the addition of the Jams, but they are a very significant brick in the wall.

Specifications
Type: High-end audio accessory
Diameter: 2 1/8" (54mm)
Inside diameter: 1 5/8" (41mm)
Height: 1 11/16" (44mm)
Note: A new large size with 45mm inside diameter is available at the same price.
Price: $364 each; quantity discounts available direct from LessLoss

Company Information
LessLoss MB
Simno g. 35A
46372 Kaunas
Lithuania

Voice: +370 698 48706
E-mail: info@lessloss.com 
Website: LessLoss.com

USA
Atelier 13 Audio
Nashville, TN 37215
Voice: (615) 881-0427
E-mail: atelier13.usa@gmail.com

The Cable Company
125 Union Square
New Hope, PA 18938

Voice: (215) 862-4870
Email: cable@thecableco.com 
E-mail: TheCableCo.com