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LS-2405 AIR
High-end speaker cable Quality: Referenz AIR Helix Point-to-Point | Multicore
Connection type: SBW | Length: 2 x 3 m | Connector: Cable lug
The LS-2405 AIR high-end speaker cable offers audiophile enthusiasts a unique sound experience. In the new Referenz LS-2405 AIR loudspeaker cable, we have taken the outstanding properties of its predecessor, the LS-2404 AIR, and developed them even further. The point-to-point Air Helix design now enables the AIR Helix architecture to be used from plug to plug and not just between the sleeves. The 360° BFA bananas and spade lugs are a further innovation, developed in-house for easy and convenient connection to the terminals. These and other technical refinements turn the already exceptional AIR cables into true masterpieces. 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

Variants from €4,799.00*
€5,199.00*
LS-4005 AIR
High-end speaker cable Quality: Referenz AIR Helix Point-to-Point | Multicore
Connection type: SW | Length: 2 x 3 m | Connector: Banana
The LS-4005 AIR high-end speaker cable offers audiophile enthusiasts a unique sound experience. In the new Referenz LS-4005 AIR loudspeaker cable, we have taken the outstanding properties of its predecessor, the LS-4004 AIR, and developed them even further. The point-to-point Air Helix design now enables the AIR Helix architecture to be used from plug to plug and not just between the sleeves. The 360° BFA bananas and spade lugs are a further innovation, developed in-house for easy and convenient connection to the terminals. These and other technical refinements turn the already exceptional AIR cables into true masterpieces. 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

€7,799.00*
New
LS-8005 AIR
High-end speaker cable Quality: Referenz AIR Helix Point-to-Point | Multicore
Connection type: SBW | Length: 2 x 3 m | Connector: BFA & Spade
High-end loudspeakers need power – and a lot of it, quickly and precisely. For the perfect sound the power must correspond one hundred percent with the analog image of the original sound source, be it an A cappella soloist or a stomping rock concert. A few technical tricks that help to skillfully circumvent physical influences are required to deliver this power to the loudspeaker right on time and holistically. Line resistance and line inductance play an important role with speaker cables. The powerful Referenz LS-8005 AIR has impressive 32 Cross Link Super Speed waveguides with an enormous total cross-section of 38 mm². The cross-section alone, however, does not make a good cable. The smart nesting of the conductors almost completely eliminates magnetic fields, paving the way for the finest sound facets and powerful pressure in equal measure. Good sound needs air! In developing our Air technology, we have proven that an audio cable’s insulation plays a key role and has a significant influence on the sound. This is due to dielectric losses and the electrostatic properties of the insulating materials, which burden the hi-fi system like heavy luggage and make it sluggish. By “omitting” this strain we then help the entire hi-fi chain to achieve top performance. We do this with special clips that guide the signal conductors through the cable in a row and freely suspended. Grounding option: The number of cell phones, WiFi routers, Bluetooth devices, PV systems and charging stations etc., is constantly increasing. This also increases the potential for electromagnetic interferences, which can affect hi-fi and high-end systems. Cables act like antennae and can transfer the interferences to the devices, where they overlay the audio signal in sensitive circuit areas, resulting in a “washed out” sound. Effective shielding and grounding concepts are crucial to protect the sound. The grounding cable of a record player is a very well-known example of this. The LS- 8005 AIR is equipped with a grounding option, which, depending on the configuration, can be connected to the amplifier’s earth, the protective conductor or earth or a grounding box, to divert disturbances. Click here and discover the exciting details

Variants from €20,000.00*
€21,999.99*
LS-2405 AIR Pure Silver
High-end speaker cable Quality: Referenz AIR Helix Point-to-Point | Multicore | Pure Silver
Connection type: SBW | Length: 2 x 3 m | Connector: BFA & Spade
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

Variants from €21,499.00*
€21,998.99*
LS-4005 AIR Pure Silver
High-end speaker cable Quality: Referenz AIR Helix Point-to-Point | Multicore | Pure Silver
Connection type: SW | Length: 2 x 3 m | Connector: BFA & Spade
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

€35,499.00*
New
LS-8005 AIR Pure Silver
High-end speaker cable Quality: Referenz AIR Helix Point-to-Point | Multicore | Pure Silver
Connection type: SW | Length: 2 x 3 m | Connector: BFA & Spade
High-end loudspeakers need power – and a lot of it, quickly and precisely. For the perfect sound the power must correspond one hundred percent with the analog image of the original sound source, be it an A cappella soloist or a stomping rock concert. A few technical tricks that help to skillfully circumvent physical influences are required to deliver this power to the loudspeaker right on time and holistically. Line resistance and line inductance play an important role with speaker cables. The powerful Referenz LS-8005 AIR has impressive 32 Cross Link Super Speed waveguides with an enormous total cross-section of 38 mm². The cross-section alone, however, does not make a good cable. The smart nesting of the conductors almost completely eliminates magnetic fields, paving the way for the finest sound facets and powerful pressure in equal measure. Good sound needs air! In developing our Air technology, we have proven that an audio cable’s insulation plays a key role and has a significant influence on the sound. This is due to dielectric losses and the electrostatic properties of the insulating materials, which burden the hi-fi system like heavy luggage and make it sluggish. By “omitting” this strain we then help the entire hi-fi chain to achieve top performance. We do this with special clips that guide the signal conductors through the cable in a row and freely suspended. To get closer to the pinnacle of audiophile perfection, we also carefully examined the conductor material. Copper in the right purity is itself already an excellent conductor, but a superconductor with no ohmic resistance to the current would be simply perfect. The material’s superconducting properties, however, require extremely low temperatures of at least -70 degrees. Under realistic conditions, silver is currently the most conductive material. With a conductivity of 61.35 S/m (siemens per meter), it outperforms copper by around six percent. Many manufacturers only use silver-plated conductors, which over time can seem, “bright”, “metallic” and even, “annoying”. We, on the other hand, use pure silver, which has a far more neutral sound. Due to the higher drift speed of the electrons, our pure silver cable delivers a more penetrating and sumptuous sound performance, across all frequency ranges. On the other hand of course, silver is about one hundred times more expensive than copper. Grounding option: The number of cell phones, WiFi routers, Bluetooth devices, PV systems and charging stations etc., is constantly increasing. This also increases the potential for electromagnetic interferences, which can affect hi-fi and high-end systems. Cables act like antennae and can transfer the interferences to the devices, where they overlay the audio signal in sensitive circuit areas, resulting in a “washed out” sound. Effective shielding and grounding concepts are crucial to protect the sound. The grounding cable of a record player is a very well-known example of this. The LS- 8005 AIR is equipped with a grounding option, which, depending on the configuration, can be connected to the amplifier’s earth, the protective conductor or earth or a grounding box, to divert disturbances. Click here and discover the exciting details

€89,000.00*
New
LS-2405 AIR | BiWire Jumper
High End BiWire Jumper Quality: Referenz AIR Helix Point-to-Point | Multicore
Length: 150 mm | Connector: Banana
To achieve the best possible sound, it is crucial that the amplifier has a firm grip on the speakers. In addition to activating the membranes to make them vibrate, it must also be able to dampen them effectively. One measure of this is the amplifier’s damping factor. The speakers’ actual damping factor is significantly influenced by the quality of the speaker cables and connecting bridges of the bi-wiring terminals. The original bridges often consist of simple stamped sheet metal parts of inferior quality. The new in-akustik AIR High End Bi-Wire Jumpers are based on the technologies, findings and materials of the renowned LS-1205 AIR, LS-2405 AIR and LS-4005 AIR speaker cables. If bi-wiring is not an option, these high-end bi-wire jumpers offer an excellent alternative to the often inferior metal bridges on the speaker terminals. They ensure an even and controlled signal distribution, which is perfectly harmonized with the respective speaker cable. BFA & Spade 360° (LS-4005 AIR & LS-2405 AIR): Movement across three axes make the 360-degree BFA and spade connectors really easy to connect and disconnect. Difficult set-up operations that put a strain on both cables and devices are a thing of the past. The connectors can easily be attached to terminals from a wide range of manufacturers. No awkward bending is necessary, avoiding damage to surfaces and potential contact resistance. Set-up is fast and problem-free. The attractively designed connectors are the perfect complement to the outstanding sound. The new connectors are used with the LS-4005 and the LS-2405. Both connector versions as well as the Basic version for the LS-1205 are pressure-grouted with a force of 1.5 tonnes.

€1,249.00*
New
LS-4005 AIR | BiWire Jumper
High End BiWire Jumper Quality: Referenz AIR Helix Point-to-Point | Multicore
Length: 180 mm | Connector: Cable lug
To achieve the best possible sound, it is crucial that the amplifier has a firm grip on the speakers. In addition to activating the membranes to make them vibrate, it must also be able to dampen them effectively. One measure of this is the amplifier’s damping factor. The speakers’ actual damping factor is significantly influenced by the quality of the speaker cables and connecting bridges of the bi-wiring terminals. The original bridges often consist of simple stamped sheet metal parts of inferior quality. The new in-akustik AIR High End Bi-Wire Jumpers are based on the technologies, findings and materials of the renowned LS-1205 AIR, LS-2405 AIR and LS-4005 AIR speaker cables. If bi-wiring is not an option, these high-end bi-wire jumpers offer an excellent alternative to the often inferior metal bridges on the speaker terminals. They ensure an even and controlled signal distribution, which is perfectly harmonized with the respective speaker cable. BFA & Spade 360° (LS-4005 AIR & LS-2405 AIR): Movement across three axes make the 360-degree BFA and spade connectors really easy to connect and disconnect. Difficult set-up operations that put a strain on both cables and devices are a thing of the past. The connectors can easily be attached to terminals from a wide range of manufacturers. No awkward bending is necessary, avoiding damage to surfaces and potential contact resistance. Set-up is fast and problem-free. The attractively designed connectors are the perfect complement to the outstanding sound. The new connectors are used with the LS-4005 and the LS-2405. Both connector versions as well as the Basic version for the LS-1205 are pressure-grouted with a force of 1.5 tonnes.

€1,499.00*
New
LS-2405 AIR Pure Silver | BiWire Jumper
High End BiWire Jumper Quality: Referenz AIR Helix Point-to-Point | Multicore | Pure Silver
Length: 150 mm | Connector: Banana
To achieve the best possible sound, it is crucial that the amplifier has a firm grip on the speakers. In addition to activating the membranes to make them vibrate, it must also be able to dampen them effectively. One measure of this is the amplifier’s damping factor. The speakers’ actual damping factor is significantly influenced by the quality of the speaker cables and connecting bridges of the bi-wiring terminals. The original bridges often consist of simple stamped sheet metal parts of inferior quality. The new in-akustik AIR High End Bi-Wire Jumpers are based on the technologies, findings and materials of the renowned LS-1205 AIR, LS-2405 AIR and LS-4005 AIR speaker cables. If bi-wiring is not an option, these high-end bi-wire jumpers offer an excellent alternative to the often inferior metal bridges on the speaker terminals. They ensure an even and controlled signal distribution, which is perfectly harmonized with the respective speaker cable. To get closer to the pinnacle of audiophile perfection, we also carefully examined the conductor material. Copper in the right purity is itself already an excellent conductor, but a superconductor with no ohmic resistance to the current would be simply perfect. The material’s superconducting properties, however, require extremely low temperatures of at least -70 degrees. Under realistic conditions, silver is currently the most conductive material. With a conductivity of 61.35 S/m (siemens per meter), it outperforms copper by around six percent. Many manufacturers only use silver-plated conductors, which over time can seem, “bright”, “metallic” and even, “annoying”. We, on the other hand, use pure silver, which has a far more neutral sound. Due to the higher drift speed of the electrons, our pure silver cable delivers a more penetrating and sumptuous sound performance across all frequency ranges. On the other hand of course, silver is about one hundred times more expensive than copper. BFA & Spade 360° (LS-4005 AIR & LS-2405 AIR): Movement across three axes make the 360-degree BFA and spade connectors really easy to connect and disconnect. Difficult set-up operations that put a strain on both cables and devices are a thing of the past. The connectors can easily be attached to terminals from a wide range of manufacturers. No awkward bending is necessary, avoiding damage to surfaces and potential contact resistance. Set-up is fast and problem-free. The attractively designed connectors are the perfect complement to the outstanding sound. The new connectors are used with the LS-4005 and the LS-2405. Both connector versions as well as the Basic version for the LS-1205 are pressure-grouted with a force of 1.5 tonnes.

€1,849.00*
New
LS-4005 AIR Pure Silver | BiWire Jumper
High End BiWire Jumper Quality: Referenz AIR Helix Point-to-Point | Multicore | Pure Silver
Length: 180 mm | Connector: Banana < > Spade
To achieve the best possible sound, it is crucial that the amplifier has a firm grip on the speakers. In addition to activating the membranes to make them vibrate, it must also be able to dampen them effectively. One measure of this is the amplifier’s damping factor. The speakers’ actual damping factor is significantly influenced by the quality of the speaker cables and connecting bridges of the bi-wiring terminals. The original bridges often consist of simple stamped sheet metal parts of inferior quality. The new in-akustik AIR High End Bi-Wire Jumpers are based on the technologies, findings and materials of the renowned LS-1205 AIR, LS-2405 AIR and LS-4005 AIR speaker cables. If bi-wiring is not an option, these high-end bi-wire jumpers offer an excellent alternative to the often inferior metal bridges on the speaker terminals. They ensure an even and controlled signal distribution, which is perfectly harmonized with the respective speaker cable. To get closer to the pinnacle of audiophile perfection, we also carefully examined the conductor material. Copper in the right purity is itself already an excellent conductor, but a superconductor with no ohmic resistance to the current would be simply perfect. The material’s superconducting properties, however, require extremely low temperatures of at least -70 degrees. Under realistic conditions, silver is currently the most conductive material. With a conductivity of 61.35 S/m (siemens per meter), it outperforms copper by around six percent. Many manufacturers only use silver-plated conductors, which over time can seem, “bright”, “metallic” and even, “annoying”. We, on the other hand, use pure silver, which has a far more neutral sound. Due to the higher drift speed of the electrons, our pure silver cable delivers a more penetrating and sumptuous sound performance across all frequency ranges. On the other hand of course, silver is about one hundred times more expensive than copper. BFA & Spade 360° (LS-4005 AIR & LS-2405 AIR): Movement across three axes make the 360-degree BFA and spade connectors really easy to connect and disconnect. Difficult set-up operations that put a strain on both cables and devices are a thing of the past. The connectors can easily be attached to terminals from a wide range of manufacturers. No awkward bending is necessary, avoiding damage to surfaces and potential contact resistance. Set-up is fast and problem-free. The attractively designed connectors are the perfect complement to the outstanding sound. The new connectors are used with the LS-4005 and the LS-2405. Both connector versions as well as the Basic version for the LS-1205 are pressure-grouted with a force of 1.5 tonnes.

€2,699.00*

Buying the right speaker cable

Choosing the right speaker cable can significantly impact the sound quality of your HiFi system. In addition to the conductor cross-section, the cable's inductance, or the construction of the cable, and other factors also play a role.

Conductor cross-section

The conductor cross-section should be large enough so that the current flowing through the cable can be transported with as little loss as possible. The higher the power of the amplifier and the longer the cable run, the larger the conductor cross-section should be.

Rule of thumb:

Standard: between 2.5 mm² to 4mm² for normal HiFi systems with cable lengths up to 5 meters.

Better Sound: 4 mm² or more for longer cables, powerful amplifiers, or an even better audiophile sound experience.

High-End: In audiophile music reproduction, special requirements are placed on signal transmission. Besides the cross-section, especially the cable architecture or the construction of the cable plays a crucial role.

What matters:

Higher Power: High-end speakers often need to be supplied with significantly more power than ordinary HiFi speakers.

Longer Cable Routes: In event technology, studios, or home cinema, cable routes of 10 meters or more are not uncommon.

Loss-Free Signal Transmission: To minimize sound losses and distortions, among other things, a thicker cross-section is necessary.

High-Quality Music Reproduction: Cross-sections up to 10 mm² for high power, long cable routes, and loss-free signal transmission.

Expanded Sound Spectrum: Thicker cables can transmit a wider frequency spectrum, revealing more details and nuances in the sound.

Dynamics and Precision: Improved dynamics and precision in the bass range as well as a clearer and finer resolution in the high-frequency range.

Future-Proof: A higher cross-section provides reserves for future upgrades of your HiFi system.

Cable inductance

The cable's inductance acts like a frequency-dependent resistance, which can dampen the high-frequency range. Therefore, a cable with low inductance is advantageous. This is achieved by a special construction of the cable, for example, through a multicore structure. The clever arrangement of conductors in the multi-layered multicore structures creates overlapping areas of magnetic fields that significantly reduce inductance. The entire frequency spectrum, including high tone frequencies and dynamic pulse sequences, are transmitted unhindered and without time delay. Music sounds more detailed. The sound is more dynamic. All details are worked out precisely and harmonically.

The construction of our audiophile AIR speaker cables is based on the multicore principle and thus reduces inductance.

Cable capacity

Particularly problematic for as loss-free signal transmission as possible is the capacity, since every cable has an electrical capacity. This behaves similarly to a battery that must be continuously charged and discharged by the components in the cable. These processes burden the audio signal, cause phase shifts, and influence the sound quality of the system. The capacity is influenced by various factors, such as the material with which the conductors are insulated (usually PVC, known as dielectric) and the distance between the conductors. Depending on which insulating material is used and how far the conductors are from each other, the capacity of the cable varies.

The AIR-Helix construction of our high-end speaker cables allows for the use of air as a dielectric (besides vacuum, the best possible dielectric) to keep the conductors at a consistent distance from each other throughout the entire length of the cable.

Experiment: Here you can learn how insulation and conductor distance affect capacity.

In summary

  • The construction of the cable: The multicore construction reduces inductance.
  • The insulation of the cable: Air as insulation (dielectric) minimizes the capacity
  • The quality of the connectors: The connectors should be coated with very hard materials (e.g., Rhodium) to prevent corrosion.
  • The material of the conductor: Copper is the most commonly used conductor material and achieves excellent sound properties depending on the degree of purity. Pure silver conductor is the best but also by far the most expensive conductor material. Not to be confused with silver-plated conductors, which tend to emphasize the high-frequency range!

Are losses on speaker cables measurable?

To get to the bottom of this question, we take you to our lab in an exciting webinar. In this webinar, we analyze the results of a measurement setup and consider what relationship might exist between sound and cable. In addition to the actual measurements, we also show you a very astonishing experiment.

What to expect in this webinar

  • Measurements on speaker cables in the lab
  • What is the damping factor and why is it important
  • How is the damping factor measured
  • Evaluation of the results
  • Another impressive "sound experiment"

Here you can register for this and other HiFi webinars at the in-akustik academy

Buying high-quality speaker cables

Many HiFi enthusiasts wonder whether it's worth investing in high-quality speaker cables. The answer is not simple, as it depends on various factors. In addition to optimizing room acoustics, the correct placement of speakers, and the finely tuned selection of electronics, the appropriate cabling of your HiFi chain also holds significant potential.

Basically:

The higher the quality of the cable, the lower the losses. This means that more of the amplifier's signal reaches the speaker, making the music sound more detailed and powerful.

First-rate cables can also improve the spatiality of the sound image. The individual instruments and voices are more locatable, and the overall sound impression appears more natural.

Speaker cables from in-akustik in four quality levels

  • Reference: Our most innovative cables made from the highest quality materials, based on the AIR Helix Point-to-Point technology for the unique audiophile listening pleasure - Made in Germany
  • Excellence: HiFi speaker cables with perfected insulation and flexibility as the basis for a solid and powerful sound - Made in Germany
  • Premium: Speaker cables for classic stereo or home cinema systems. Extremely easy to lay.
  • Star: Universal speaker cables for a wide range of applications such as Home-Hifi, Car-Hifi, DJ, or home cinema areas

Buying high-end speaker cables from in-akustik

High-Quality Materials: Ultra-pure, oxygen-free copper for our top-class speaker cables - with silver cables, an even better sound experience is achieved.

Assembly: High-quality connectors and clean processing.

Made in Germany: All cables of the "Reference" quality level do not leave our manufacturing plant without a final quality control.

High-Quality Accessories for Speaker Cables

In addition to the speaker cables themselves, there are several useful accessories that can facilitate installation and use and can improve sound quality.

Here are some examples:

Banana plugs:

Banana plugs allow for a quick and easy connection between the speaker cable and speaker.
They are available in various designs, e.g., as straight or angled plugs.
For high-end systems, we recommend rhodium-coated plugs to prevent corrosion and contact resistance.

Spade connectors:

Spade connectors are also available in various designs. Our high-end versions are rhodium-coated and feature a slotted contact fork. The contact spring created by the slot deforms concavely when tightened, thus preventing the spade connectors from slipping out.

Cable bases:

The cable bases consistently keep the cable at a distance from the ground. This reduces unwanted capacities and relieves the electronics.