Product information "LS-1205 AIR Pure Silver"

Experts have already been impressed by the LS-1204 AIR (copper). This is how AUDIO summed it up: "A stroke of genius that shows competitors how it should be done – in terms of sound, too. This was wonderfully dynamic, with the most fabulous drive reaching the speaker cones. Admittedly, the price is not low, but the acoustic yield is truly world class. What's more, everything was made by hand. You can feel the love for the product."

With the LS-1205 AIR Pure Silver, the currently most filigree model in AIR technology is now also available as a pure silver cable. The structure, dimensions and conductor arrangement of this cable correspond to the copper version of the LS-1205 AIR. As with the LS-4005 AIR Pure Silver and LS-2405 AIR Pure Silver, the conductors have been optimized. Pure silver is used as the conductor material for the LS-1205 AIR Pure Silver too. Under realistic conditions, silver is currently the most conductive material. At 61.35 S/m (Siemens pro Meter), its conductivity is approximately six percent superior to that of copper. The electrons move 1.5 times faster than in a copper conductor!

Click here and discover the exciting details

Application: HiFi speaker cable
Cable diameter: 13 mm
Conductor cross-section: 2 x 2.4 mm² (4 x 1.2 mm²)
Conductor design: Cross Link Super Speed waveguide
Conductor material: High-purity silver
Conformity: CE, REACH, RoHS
Connection type: SW
Connector assembly: Pressure-grouted contacts (1.5 tonnes)
Connector housing: Full metal (cable lug), Plastic (BFA)
Contact enhancement: Rhodium-coated
Contact material: Beryllium Copper (BFA Banana), Tellurium copper (cable lug)
Customized assembly: On request
Design: 4-fold multicore
Dielectric: Air
Jacket: PE network jacket
Length: 2 x 3 m
Product group: Loudspeaker cables
Product category: Referenz speaker cables
Quality: Referenz
Technology: AIR Helix Point-to-Point Multicore
Connector: Banana Cable lug
Made in Germany: Yes
Factory Tour & Listening Session

"When the optimized power supply was added to the mix, the sound was even cleaner and also gained depth. The Audiovector R8 Arreté speakers also radiate mid and high frequencies to the rear. However, the already impressive three-dimensionality was, so to speak, given a clean drawing. The increase in homogeneity and conciseness was downright astonishing. Where one is often gained at the expense of the other (tablecloth effect), here the tablecloth was, so to speak, larger at all corners." Audio Swiss | 01-2024
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Previous cable model LS-1204

"Oh, this is not an easy case. The price for this cable is indecent - high, higher, highest. But it also brings something. A lot, in fact. The entire chain seems tidier, plays more to the point. A clear plus [...] The sound gain is relative - it is very much in proportion to the chain we have built up. We should already be moving above 30,000 euros. Otherwise, the purchase of an LS-1204 AIR Pure Silver makes no sense. That's a rough estimate, but it's an honest one. Only at this level does the premium cable start to fly. And this flight will be wonderful." Stereoplay | 03-2020
Go to test report
  • Stereo set LS-1205 AIR Pure Silver stereo set Speaker cable
  • Quality certificate
  • Warranty card
  • CD "Der Anlageberater"
  • Universal user manual
  • Company profile
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Name
LS-1205 AIR Pure Silver
LS-2405 AIR Pure Silver
LS-4005 AIR Pure Silver
Rating
Description

Experts have already been impressed by the LS-1204 AIR (copper). This is how AUDIO summed it up: "A stroke of genius that shows competitors how it should be done – in terms of sound, too. This was wonderfully dynamic, with the most fabulous drive reaching the speaker cones. Admittedly, the price is not low, but the acoustic yield is truly world class. What's more, everything was made by hand. You can feel the love for the product."

With the LS-1205 AIR Pure Silver, the currently most filigree model in AIR technology is now also available as a pure silver cable. The structure, dimensions and conductor arrangement of this cable correspond to the copper version of the LS-1205 AIR. As with the LS-4005 AIR Pure Silver and LS-2405 AIR Pure Silver, the conductors have been optimized. Pure silver is used as the conductor material for the LS-1205 AIR Pure Silver too. Under realistic conditions, silver is currently the most conductive material. At 61.35 S/m (Siemens pro Meter), its conductivity is approximately six percent superior to that of copper. The electrons move 1.5 times faster than in a copper conductor!

Click here and discover the exciting details

AIR technology is a milestone in our more than 46-year company history and is causing a sensation in the hi-fi industry worldwide. The approach itself sounds relatively banal: The physically induced losses must be minimized in order to transmit the original music signal as authentically and neutrally as possible. And, thanks to the AIR technology, loss-free transmission is closer than ever before. It leads to a significantly better reproduction, which is not only subjectively audible, but also objectively measurable.

The insulation (or dielectric) of the AIR cables is practically perfect thanks to the air insulation, and hardly affects the sound at all. The structure, dimensions and arrangement of the conductors are optimized, and approach the limits of what is physically possible. Adding another highlight to this perfect audiophile foundation, we then focused on the conductor material of the cables. Copper in the appropriate purity is already a very good conductor. A superconductor, where electrical resistance is zero, would be perfect, of course.

Unfortunately, superconducting materials require temperatures of at least -70 degrees. Under realistic operating conditions, the best conducting material we have is currently silver. At 61.35 S/m (Siemens pro Meter), its conductivity is approximately six percent superior to that of copper. However, this precious metal is about 100 times more expensive.

Below you can learn more about the outstanding technical features of this cable, the innovations in the 5th generation and the physical principles used in the AIR technology.

Click here and discover the exciting details

AIR technology is a milestone in our more than 46-year company history and is causing a sensation in the hi-fi industry worldwide. The approach itself sounds relatively banal: The physically induced losses must be minimized in order to transmit the original music signal as authentically and neutrally as possible. And, thanks to the AIR technology, loss-free transmission is closer than ever before. It leads to a significantly better reproduction, which is not only subjectively audible, but also objectively measurable.

The insulation (or dielectric) of the AIR cables is practically perfect thanks to the air insulation, and hardly affects the sound at all. The structure, dimensions and arrangement of the conductors are optimized, and approach the limits of what is physically possible. Adding another highlight to this perfect audiophile foundation, we then focused on the conductor material of the cables. Copper in the appropriate purity is already a very good conductor. A superconductor, where electrical resistance is zero, would be perfect, of course.

Unfortunately, superconducting materials require temperatures of at least -70 degrees. Under realistic operating conditions, the best conducting material we have is currently silver. At 61.35 S/m (Siemens pro Meter), its conductivity is approximately six percent superior to that of copper. However, this precious metal is about 100 times more expensive.

Below you can learn more about the outstanding technical features of this cable, the innovations in the 5th generation and the physical principles used in the AIR technology.

Click here and discover the exciting details

Price

€12,499.00*

€21,499.00*

€35,499.00*

Application
HiFi speaker cable
High-end speaker cable
High-end speaker cable
Cable diameter
13 mm
24 mm
40 mm
Conductor cross-section
2 x 2.4 mm² (4 x 1.2 mm²)
2 x 4.8 mm² (8 x 1.2 mm²)
2 x 9.6 mm² (16 x 1.2 mm²)
Conductor design
Cross Link Super Speed waveguide
Cross Link Super Speed waveguide
Cross Link Super Speed waveguide
Conductor material
High-purity silver
High-purity silver
High-purity silver
Conformity
CE; REACH; RoHS
CE; REACH; RoHS
CE; REACH; RoHS
Connection type
SW
SBW; SW
SBW; SW
Connector assembly
Pressure-grouted contacts (1.5 tonnes)
Pressure-grouted contacts (1.5 tonnes)
Pressure-grouted contacts (1.5 tonnes)
Connector housing
Full metal (cable lug); Plastic (BFA)
Solid metal
Solid metal
Contact enhancement
Rhodium-coated
Rhodium-coated
Rhodium-coated
Contact material
Beryllium Copper (BFA Banana); Tellurium copper (cable lug)
Beryllium Copper (BFA Banana); Tellurium copper (cable lug)
Beryllium Copper (BFA Banana); Tellurium copper (cable lug)
Customized assembly
On request
On request
On request
Design
4-fold multicore
8-fold double layer multicore
16-fold double layer multicore
Dielectric
Air
Air
Air
Jacket
PE network jacket
PE network jacket
PE network jacket
Length
2 x 3 m
2 x 3 m
2 x 3 m
Product group
Loudspeaker cables
Loudspeaker cables
Loudspeaker cables
Product category
Referenz speaker cables
Referenz speaker cables
Referenz speaker cables
Quality
Referenz
Referenz
Referenz
Technology
AIR Helix Point-to-Point; Multicore
AIR Helix Point-to-Point; Multicore
AIR Helix Point-to-Point; Multicore
Connector
Banana; Cable lug
Banana; Cable lug
Banana; Cable lug
Made in Germany
Yes
Yes
Yes
Connector highlight
-
BFA Banana 360°; Spring-loaded contact fork; Spade lug 360°
BFA Banana 360°; Spring-loaded contact fork; Spade lug 360°

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Thanks to the Air Helix design, the conductors run freely suspended through the length of the cable.

The Air Helix architecture permits signal conductors to be insulated to practically 100% by air. Special clips were developed to provide the supporting framework. Positioned at defined intervals inside the cables, these clips keep the helically-arranged conductors apart. Cable flexibility is assured by means of two struts that ensure the clips remain together but also at a precise distance from each other. This architecture is unique, bringing low capacitance and minimum dielectric losses – a true milestone in the search for open and unadulterated sound.

Our physical approach: Minimize losses for true-to-original playback.

Our Referenz AIR cables transport audio signals between source, amplifier and speaker in an authentic way and with a minimum of loss. You can enjoy music that precisely expresses the emotions of the artists at the time of recording – sensual, subtle, light-hearted or orchestral right through to full-blooded and rocking. Vocals and instruments are delivered in unadulterated form. Everything remains vibrant and full of emotive energy. Favorite tracks and pieces continue to trigger strong feelings even when you’ve heard them a hundred time over.

  • "We pull ourselves together and are as brutally honest as possible: The sound gain is relative – it is extremely proportional to the chain we have built up. We should already be in the €30,000 plus area. Otherwise it makes no sense to purchase an LS-1204 AIR Pure Silver. It’s a rough estimate, but it’s a serious one. It’s only up here at this dizzying height that the high-grade cable really outperforms all others. And boy does it outperform."

    Stereoplay - Andreas Günther | LS-1204 AIR Pure Silver
  • "Oh, this is no simple little box. The price for this cable is indecent – high, higher, highest. But it also has something special. A lot, in fact. The entire chain seems tidier, plays more precisely. A clear plus. But is it worth €9.500? It is and it always will be, a cable. So we say: A clear yes for the sound gain, but an individual decision when buying."

    Stereoplay - Andreas Günther | LS-1204 AIR Pure Silver (previous model)
  • “The bass comes in after the second refrain, followed by a saxophone solo. Fabulous music, captured using the highest quality sound resources. This is the material the LS1204 AIR Pure Silver thrives on – the music appears magically three-dimensional, the strings have a significantly clearer sense of presence."

    Stereoplay - Andreas Günther | LS-1204 AIR Pure Silver (previous model)

Auf den Punkt gebracht

AIR Helix


The Air Helix architecture enables the signal conductors to run freely suspended through the length of the cable and permits signal conductors to be insulated to practically 100% by air.

The dielectric


Using air as a dielectric lowers capacitance to a minimum. In comparison with other insulators, using air as a dielectric leads to no increase in capacitance and creates no dielectric losses.

Multicore structure


By cleverly arranging the conductors in the multiply nested multicore structures, overlapping magnetic field areas are created that significantly reduce inductance.

The conductors


The Cross Link Super Speed waveguide avoids so-called skin effects and delivers a balanced sound, even with complex music passages and high volume levels.

Pressure-grouted contacts


The connectors are pressed directly into the conductor material of the cable using a special tool with a force of 1.5 tonnes. Contact resistance and other negative solder effects are avoided.

Point-to-point Air Helix for end-to-end connections

A new feature in the 5th generation of in-akustik’s Air Helix architecture is the point-to-point connection. Specially designed transitions are available for each type of cable and connector. Across the complete length of the cable – point-to-point AIR Helix. It may sound trivial at first, but the results are impressive. Sound signals are transported with minimized losses, right through to the final centimeters. The sound is more detailed and dynamic than even before.

The conductor structure

The Cross Link Super Speed waveguide avoids skin effects caused by eddy currents in the conductor. Thanks to the braided structure, the waveguide is able to precisely transport even extreme current peaks. A lacquer coating around each wire prevents eddy currents within the conductor and protects against oxidation. All this results in a conductor that delivers a balanced sound consisting of vibrant and never overemphasized timbres, even in complex musical passages and at high volume levels.

Pure silver conductors

Pure silver is regarded as the best conductor, delivering more detail across all frequency ranges. The charismatic sound of pure silver is primarily due to its high drift speed. Pure silver cables shouldn’t be confused with silver-plated cables. Silver-plated cables are said to lend a metallic and aggressive character to the sound, something pure silver cables never do.



The multicore structure

Inductance is critical to the capacitance of a loudspeaker cable, By cleverly arranging the conductors in the multiply nested multicore structures, overlapping magnetic field areas are created that significantly reduce inductance. This allows the entire frequency spectrum, including high frequencies and dynamic impulse sequences, to be transported in an unimpeded way and with no delays. The music seems more exquisitely detailed, and the sound gains in fine dynamism. All details are kept distinct yet harmonious at the same time.

Cable manufacturing unit

The beating heart of in-akustik is our manufactory. This is where our success story is rooted – permeated by a congenial working atmosphere, a love of music and a passion for detail. At in-akustik, we believe musical enjoyment stems from a listening experience that remains as close as possible to the original recording and the artist’s interpretation of the piece. That’s why we boast a committed workforce that combines curiosity with a keen sense of precision. With a fascination for music and things that are really special – like the development of our complex AIR cables.

Handmade

Each cable is handcrafted with the utmost care. Our extensive know-how and the qualifications of our team enable us to manufacture the complex cables in a customized manner. Apart from the finest of materials, our most important resource is the manual dexterity of our cable assemblers. In assembling our outstanding cables, they demonstrate meticulousness, composure and dedication.

Rigorous quality control

We manufacture in accordance with the highest standards. Rigorous quality control is carried out before, during and subsequent to assembly. We verify the tolerances of ever individual component. At every stage of manufacturing, we check the configuration and electrics for short-circuits. We also conduct functional and mechanical testing. No product leaves our manufacturing unit without a final quality check.

Did you know...

...that our LS-1205 AIR Pure Silver (2 x 3 m; SW) is made up of 534 individual components? The pure silver wire used is 647 m long, and the PE monofilament is 667 m long. Containing 1,584 drill holes, the Air Helix design of this cable type demands great dexterity on the part of the assemblers when they’re threading through the conductors.


AIR background

It is widely known that the “dielectric” (= non-conductive substance) of capacitors plays a major role in the sound of hi-fi devices and loudspeakers. The engineers therefore select all components very carefully. Even if they only contain a few cubic millimeters of dielectric: A meter-long cable usually already contains several hundred cubic centimeters of dielectric substance in the form of insulating material. This dielectric stores electrical charge, i.e. energy – which is entirely wanted and necessary in electronic components such as capacitors. With cables, however, the resulting capacitance is considered a "parasitic" effect and is not wanted for unadulterated music playback because it significantly influences the transmission properties and leads to interactions with the connected electronics.

Rhodium-coated

The best cable requires optimum connection technology. We use tellurium copper, a harder metal alloy that maintains the high conductivity value. Much superior to that of brass connectors. The rhodium coating ensures long-lasting contact and corrosion resistance. The stable conductivity is even maintained with frequent conversions. This is better than gold contacts, which wear out quicker.

Pressed contacts (1.5 tonnes)

The contact elements of the connectors are pressed directly into the conductor material using a special tool with a force of 1.5 tonnes. This creates a stable and reliable connection without the use of solder or ferrules. Transition resistances and negative effects are avoided to ensure optimum signal transmission.

Test listening at home now

Are you curious to know whether the AIR cables keep the finest details precisely and harmoniously on your system? Test our AIR cables or an audio component from our partner companies Primare and Audiovector in your home for 14 days with no strings attached!

Book a listening session

Or directly to the nearest dealer!

We work with a network of authorized dealers and distributors throughout the world. Arrange a listening appointment now.

Find a in-akustik partner

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Soundscapes are created by the dynamics in the music. To exploit the full potential of your high-end audio components, you need a reliable power pipeline that provides your components with the power peaks with as little delay and loss as possible. This is where the AC-1205 AIR mains connection cable comes into play. Our innovative AIR technology has already caused a sensation in the high-end scene and now also forms the architectural basis for the AC-1205 AIR mains cable. Using specially developed clips, the individual conductors are held at fixed distances and insulated from each other by an "air dielectric". This reduces both capacitive and inductive interference and ensures a smooth flow of energy. The multicore design of the AC-1205 AIR neutralizes the magnetic interference and magnetic fields generated by current peaks and minimizes the line inductance. In addition, the large number of individual wires reduces the skin effect that occurs at high frequencies. Splitting the current across many cores not only increases the usable conductor cross-section, but also increases the overall cross-section of the cable. The result is a reliable power supply, even in the most demanding passages, which allows your sound system to develop its full potential. To minimize electromagnetic interference fields, the AIR cables are shielded with a dense braid of tinned copper. This not only protects your audio components, but also neighboring cables from unwanted interference caused by the high current peaks in the power cable. The in-akustik High End AC-1205 AIR mains cable is an outstanding energy pipeline for perfect audiophile sounds. It eliminates unwanted effects and makes a not insignificant contribution to the most authentic music reproduction possible. Click here and discover the exciting details

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