SKU: 26269506803

Inakustik Reference LS‐404 MICRO AIR Speaker Cable (pair)

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Description

Inakustik Reference LS‐404 MICRO AIR Speaker Cable (pair)Reference LS 404 Micro AIR We are continuing the story of MICRO AIR Technology with the new REFERENCE LS 404 MICRO AIR speaker cable: As with the already legendary AIR Helix cables, air is a central component of the insulation concept in the new REFERENCE MICRO AIR technology. However, due to the low loudspeaker impedances low line resistances and low inductance are also very important for loudspeaker cables. For this reason, a total of 8 concentric

Reference LS-404 Micro AIR

We are continuing the story of MICRO AIR Technology with the new REFERENCE LS-404 MICRO AIR speaker cable: As with the already legendary AIR Helix cables, air is a central component of the insulation concept in the new REFERENCE MICRO AIR technology. However, due to the low loudspeaker impedances low line resistances and low inductance are also very important for loudspeaker cables. For this reason, a total of 8 concentric copper conductors are used in the REFERENCE LS-404 MICRO AIR in addition to the air dielectric. Thanks to this multicore architecture, the magnetic fields of the positive and negative conductors overlap and neutralise each other. This reduces the inductance of the cable considerably, thereby guaranteeing unadulterated transmission of the audio signal over a broad frequency range. The LS-404 follows this approach and has a well-balanced sound character with precise timing with a well-controlled foundation. This cable is therefore primarily designed for fully-sized floor-standing loudspeakers. Of course, sound always is evaluated subjectively and ultimately depends on the overall constellation of the hi-fi system. In the end the decisive factor is your very personal auditory impression

Features

  • Micro AIR Technology
  • AIR dielectric
  • Concentric Copper wire construction
  • 8-fold multicore architecture
  • Single Wire & Single BiWire
  • Available as BFA, Cable lug or Easy-Plug variant

Awards

 

MICRO AIR TECHNOLOY

The laws of nature cannot be switched off. They need to be used skilfully. Every cable has so-called parasitic effects due to these laws of nature. Among other things, this includes the capacitance – i.e. the fact that a cable, like a battery, stores energy temporarily and releases it again with a delay. This effect strongly influences the transmission of audio signals and is undesirable. Cable capacitance is a physical phenomenon and its size depends on various factors. One essential factor is the insulation material, the so-called dielectric, which can increase the capacity many times over. Air on the other hand does not do this and is therefore the ideal insulator. Part of the insulation of the MICRO AIR technology is its complex, diamond-shaped structure. The chambers created by this design increase the distance between the conductors and increase the air content in the insulation. In this way, irritating capacities are reduced and the transmission characteristics for the sensitive audio signals are optimised. 

CONCENTRIC COPPER

By contrast to conventional conductor structures, in which the arrangement of the individual wires in a cable is chaotic, the wires in the concentric copper wires are arranged in accordance with an exactly defined scheme in which they are precisely ordered in several layers. This design reduces irregular contact points between the wires, which harmonises the signal flow and minimises transit time differences. Impulses can be played back exactly while retaining the spatial information of the music. A thin layer of polyethylene protects the highly pure copper from oxygen and therefore against oxidation. 

"MOODY" BEASTS

A loudspeaker cable must transport energy and information in equal measure. Loudspeakers can also be moody little beasts, with a very dynamic electrical life of their own. They behave differently for every tone and volume and have to be constantly kept in check by the amplifier. This means the signal on a loudspeaker cable is a jumble of tiny to huge levels, alternating current and voltage of different frequencies and phase lengths. To faithfully transmit the extremely fine details that define sound and space and lend emotion to the music, the cable has to metaphorically keep the speaker on as tight a leash as possible to the amplifier. These beasts can be tamed by applying physical laws, using the right materials, and an appropriate cable architecture. 

THE CONNECTIONS

The REFERENCE LS-404 MICRO AIR is available with BFA Bananas or with cable lugs or as Easy- Plug version. The surfaces of the BFA Bananas and the cable lugs are finished with a rhodium coating and are therefore extremely durable. The contact surfaces and the screw connection of the cable lugs are manufactured from a single piece, thereby avoiding contact resistance. The contact surface, which has slits on the side, changes to a concave shape when the device terminal connections are tightened, thus preventing the cable lugs from sliding out. 

OUR CABLE MANUFACTURE

Just like our AIR HELIX cables, the REFERENCE MICRO AIR cable technology is manufactured in our own factory in Germany. In addition to the complex manual assembly of the cables, we have paid strict attention to corresponding quality control. After production each cable is put through its paces. Functional tests as well as mechanical tests are performed and of course we also monitor live performance as part of product development for the greatest possible precision and low-loss signal transmission. 

Shipping Notes
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  • Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 26269506803

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4.9 ★★★★★
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K
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Kellie
Whiting, US
★★★★★ 5
Game changer for hot drinks
Color: Black
This coffee mug warmer works great and keeps my coffee at the perfect temperature without overheating. Love the choice in temperatures feature. It’s simple to use, heats quickly, and fits my mugs well. A great upgrade for enjoying hot coffee longer at my work desk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
K
Verified Purchase
Kitty Warner
Battle Creek, US
★★★★★ 5
THE ABSOLUTE BEST MUG WARMER! WORKS PERFECTLY!
Color: Black
This is the best mug warmer I've ever had! It's sleek, keeps drink hot or even warm if that's what you prefer. I bought two, my niece liked mine so much she got one, and I'm getting one for my guest who comes to my house.
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Reviewed in the United States on December 24, 2025
E
Verified Purchase
E. W.
Lake Worth, US
★★★★★ 4
YEOSEN 3 Temperature Mug Warmer
Color: Black
Wow! There really are warmer mug warmers than lukewarm! This is one of them. Who wants lukewarm coffee? The YEOSEN 3 Temperature Mug Warmer on the MEDIUM temperature setting keeps my coffee HOT enough. Not lukewarm, or barely warm (even at the bottom of the cup). In fact, I use the lower temp. settings, while the level of liquid goes down. The lowest temperature is HOT enough ...not lukewarm. It's not burning, but HOT. I bought it because the reviews said it kept the coffee much warmer than lukewarm. And it does. The point is, when I walk away from my desk for 15 minutes, the temperature of my coffee is still satisfyingly hot. After all, what is lukewarm? It's a few degrees above normal body temperature! 137 is hotter than that! The unit automatically shuts off (the Off-On button is on the bottom of the unit positioned under the hot plate and the weight of the cup pushes the button to turn it on), when you pick up the cup it shuts off. I don't like the auto shut off button on the bottom of the unit. It shuts off and on every time you take a drink. Lift the cup up and it shuts off, set it back down and it turns back on. Wish you could shut that feature off. A piece of tape? but unplugging it from the wall is inconvenient. Maybe, because it's so much warmer than lukewarm, it needs some kind of safety feature. But, all in all, I would definitely buy another one.
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Reviewed in the United States on March 19, 2020
F
Verified Purchase
Frank
Lexington, US
★★★★★ 5
BEST mug warmer
Color: Black
This is the best of the many mug warmers available online. It has 3 temperatures. I use the highest - 167 degrees. I like my coffee HOT. With this warmer I don’t have to return to the microwave as often to reheat my coffee. It is very easy to use- takes large mugs as well as regular sized cups. I have looked everywhere for a “flat bottomed” mug . All the mugs I have found have a rim on the bottom which prevents complete contact with the warmer. However the warmer works with the “bottom rimed “ mugs. I use my warmer for the end table by my recliner. I am considering purchasing a second warmer for my desktop. I definitely recommend this as the BEST mug warmer. I have been using it many hours daily for over a month as I am retired. It works fine. I did just purchase a second one. It came the day after I ordered it. Now I can enjoy a hot beverage by my recliner or on my desktop. I purchased a silicone cover/lid for my mug. This really keeps my beverage hot. However when you remove the lid the condensation on the underside of the lid drips. I keep a paper towel/napkin close by to catch the condensation.
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Reviewed in the United States on February 23, 2021
S
Verified Purchase
Scott
Birmingham, US
★★★★★ 5
Warming Up to My New Mug Warmer
Color: Black
I keep mine next to my computer monitor so I always have that quick caffeine jolt nearby. The three temperature settings are convenient and the LED readouts ensure your brew is as hot as you want it to be. Not sure about reviews saying this warmer makes drinks lukewarm because it doesn't. In fact, it can be used to reheat drinks in just a few minutes. I also like that it's a 120v plug-in and it's not the weak, slow, and temperamental USB powered one. One tip: The on-off switch is on the underside of the warmer. It must be depressed for it to power on. If the red LED doesn't indicate the temperature, then the warmer is not on (or the button is broken). You don't have to turn the unit over either to press the power button, just press down on your mug until the temperature LED turns on. The other hint is that this warmer can get very hot very quickly. While the edges stay cool to the touch, never touch the outlined hotplate area or you might get burned. Wait for it too cool down or use a pair of oven mitts---it's that hot.
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Reviewed in the United States on March 27, 2023

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