Product information "NF-2405 AIR Pure Silver | XLR"

Our AIR cables have already caused something of a sensation in the world of high-end connections: “The best cable ever connected here between amp and speakers!” (AUDIO 02-2020| LS-2404 AIR PURE SILVER). With the NF-2405 AIR Pure Silver, the analog member of the AIR family is now also available as a pure silver cable.

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 significantly better sound 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.

New XLR 180° plug: It is only possible to insert XLR connectors in one direction. This can be annoying as the position of the XLR sockets in devices varies. In order for the cable to fit, it must sometimes be twisted by force. This puts a strain on cables, plugs and device sockets and sometimes simply looks a mess. The new XLR 180° plugs developed in-house can be rotated by +/- 45 degrees, i.e., up to a total of +/- 90 degrees from connector to connector. The finishing touch for perfect cabling.

Click here and discover the exciting details

Application: High-end audio cable
Cable diameter: 25 mm
Conductor design: Cross Link Super Speed waveguide
Conductor material: High-purity silver
Conformity: CE, REACH, RoHS
Connector assembly: Soldering
Connector housing: Solid metal
Contact enhancement: Rhodium-coated
Contact material: Tellurium copper
Customized assembly: On request
Design: Symmetrical
Dielectric: Air
Jacket: PE network jacket
Length: 1 m, 1.5 m, 2 m
Shielding: Dense copper braid, tin-plated (oxidation protection)
Product group: Home HiFi
Product category: Analog interconnects
Quality: Referenz
Technology: AIR Helix Point-to-Point Double mono
Connector: 2 x XLR (f) > 2 x XLR (m)
Connector highlight: XLR 180 | +/- 45° rotatable
Made in Germany: Yes
Audio Swiss logo on red background
Factory Tour & Listening Session

"Furthermore, the optimized power supply ensured a consistent energy flow, resulting in a more organized soundstage with added depth. The Audiovector R8 Arreté speakers emit mid and high frequencies to the rear as well. However, the already impressive spaciousness was further refined. The improvement in coherence and precision was truly striking. Where often one aspect is gained at the expense of another (tablecloth effect), here the tablecloth seemed to expand in all directions." Audio Swiss | 01-2024
Go to the test report
Inakustik Super AV Award NF-2404 Pure Silver Logo
Previous model NF-2405 AIR Pure Silver

Shortly before the end of the year, our NF-2404 AIR Pure Silver received an international award. The renowned Chinese hi-fi magazine "Super AV" presented it with the "Overall Performance Award 2020 - Outstanding" in the Interconnect category. 12-2020 | China
  • Stereo set NF-2405 AIR Pure Silver | XLR 180°
  • Quality certificate
  • Warranty card
  • CD "Der Anlagenberater"
  • Universal user manual

If you have any questions about product safety, please contact:
in-akustik GmbH & Co. KG
Untermatten 12-14
79282 Ballrechten-Dottingen
Germany
Tel.: +49 (0) 7634 5610-0
E-Mail: service@in-akustik.de

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in-akustik Reference NF-2405 AIR Pure Silver Cable
in-akustik Reference NF-4005 AIR Pure Silver XLR Cable
in-akustik Reference NF-2405 AIR Pure Silver Cable
Name
NF-2405 AIR Pure Silver | XLR
NF-4005 AIR Pure Silver | XLR
NF-1205 AIR Pure Silver | XLR
Rating
Description

Our AIR cables have already caused something of a sensation in the world of high-end connections: “The best cable ever connected here between amp and speakers!” (AUDIO 02-2020| LS-2404 AIR PURE SILVER). With the NF-2405 AIR Pure Silver, the analog member of the AIR family is now also available as a pure silver cable.

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 significantly better sound 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.

New XLR 180° plug: It is only possible to insert XLR connectors in one direction. This can be annoying as the position of the XLR sockets in devices varies. In order for the cable to fit, it must sometimes be twisted by force. This puts a strain on cables, plugs and device sockets and sometimes simply looks a mess. The new XLR 180° plugs developed in-house can be rotated by +/- 45 degrees, i.e., up to a total of +/- 90 degrees from connector to connector. The finishing touch for perfect cabling.

Click here and discover the exciting details

Good sound needs space! In developing our Air technology, we have proven that an audio cable’s insulation plays a decisive 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.

A cable’s geometry also influences these factors. Bigger distances mean less load. This is exactly where our NF-4005 AIR Pure Silver comes in: The AIR helix design and the cable’s dimensions create even more space and air between the signal conductors. The cable thus forms a wide audiophile corridor and rolls out the red carpet, so to speak, for every sound detail.

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.

New XLR 180° plug: It is only possible to insert XLR connectors in one direction. This can be annoying as the position of the XLR sockets in devices varies. In order for the cable to fit, it must sometimes be twisted by force. This puts a strain on cables, plugs and device sockets and sometimes simply looks a mess. The new XLR 180° plugs developed in-house can be rotated by +/- 45 degrees, i.e., up to a total of +/- 90 degrees from connector to connector. The finishing touch for perfect cabling.

Click here and discover the exciting details

Cable capacitance plays a decisive role, especially for audio cable connections between individual devices. As the signal sources are very weak and react sensitively to high cable capacitance, audio cables are virtually predestined for air insulation using air helix technology.

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.

New XLR 180° plug: It is only possible to insert XLR connectors in one direction. This can be annoying as the position of the XLR sockets in devices varies. In order for the cable to fit, it must sometimes be twisted by force. This puts a strain on cables, plugs and device sockets and sometimes simply looks a mess. The newly developed XLR 180° plugs can each be rotated by +/- 45 degrees, i.e. +/- 90 degrees in total. The finishing touch for perfect cabling.

Click here and discover the exciting details

Price

€4,799.00*

€8,995.00*

€2,999.00*

Application
High-end audio cable
High-end audio cable
High-end audio cable
Cable diameter
25 mm
40 mm
13 mm
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
Connector assembly
Soldering
Soldering
Soldering
Connector housing
Solid metal
Solid metal
Solid metal
Contact enhancement
Rhodium-coated
Rhodium-coated
Rhodium-coated
Contact material
Tellurium copper
Tellurium copper
Tellurium copper
Customized assembly
On request
On request
On request
Design
Symmetrical
Double symmetrical
Symmetrical
Dielectric
Air
Air
Air
Jacket
PE network jacket
PE network jacket
PE network jacket
Length
1 m; 1.5 m; 2 m
1 m; 1.5 m; 2 m
1 m; 1.5 m; 2 m
Shielding
Dense copper braid, tin-plated (oxidation protection)
Dense copper braid, tin-plated (oxidation protection)
Dense copper braid, tin-plated (oxidation protection)
Product group
Home HiFi
Home HiFi
Home HiFi
Product category
Analog interconnects
Analog interconnects
Analog interconnects
Quality
Referenz
Referenz
Referenz
Technology
AIR Helix Point-to-Point; Double mono
AIR Helix Point-to-Point; Double mono
AIR Helix Point-to-Point; Double mono
Connector
2 x XLR (f) > 2 x XLR (m)
2 x XLR (f) > 2 x XLR (m)
2 x XLR (f) > 2 x XLR (m)
Connector highlight
XLR 180 | +/- 45° rotatable
XLR 180 | +/- 45° rotatable
XLR 180 | +/- 45° rotatable
Made in Germany
Yes
Yes
Yes

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in-akustik Reference NF-2405 AIR Pure Silver NF Cable

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.

  • "The NF-2404 AIR cinch cable adds magical cubic meters of sound quality compared to a competitor model. A clear vote for the in-akustik option [...] This cinch cable does everything right. The details it conveys are astonishing. It is more on the warm, bass-heavy side here. Combined with a high level of spatial analysis. Great at visualizing panoramas."

    Stereoplay | NF-2404 AIR (previous model)
  • "There's nothing magical about cables. The best cables are not those that get the most out of a hi-fi chain, they're the ones that lose the least of the original sound."

    Holger Wachsmann | in-akustik Product Developer
  • "The three cables (LS-2404 AIR/NF-2404 AIR/AC-2404 AIR) improve an existing hi-fi system costing around €25,000 by some 15%, which is sheer luxury. This is only possible with in-akustik – most competitors can offer nothing approaching this gain. The workmanship could not be more superb, and the fact that everything is hand-made is additional balsam to the soul."

    Audio | NF-/AC-/LS-2404 AIR (previous model)
in-akustik Reference LS-4005 AIR Pure Silver Speaker Cable

To the point

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.

XLR 180°


The Referenz XLR 180° connectors developed by us can be rotated by +/- 45 degrees and can therefore be optimally adapted to individual socket alignments. Cables and sockets are less stressed.

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.

in-akustik Reference NF-2405 AIR Pure Silver NF Cable
in-akustik Reference NF-2405 AIR Pure Silver NF Cable

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.

in-akustik Reference LS-4005 Air Pure Silver Speaker Cable

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.


in-akustik Reference NF-2405 AIR Pure Silver NF Cable

The shielding

EMC interference, from sources such as mobile phone and WiFi networks, is constantly increasing. This interference impairs the sensitive audio signal. Interference occurs when signals of different frequencies overlap. This can result in unwanted distortions that have nothing to do with the original signal. Dense shielding is therefore essential to protect the extremely sensitive music signals from this interference so that even the finest details are preserved.

The woman is working on In-Akustik reference NF-2405 NF cable.

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.

in-akustik Reference NF-2405 AIR Pure Silver NF Cable

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.

Person tests in-akustik Reference LS-4005 AIR cable.

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.

in-akustik Reference NF-2405 AIR Pure Silver NF Cable

Did you know...

...that our NF-2405 AIR Pure Silver (2 x 1.5 m) is made up of 195 individual components? The pure silver wire used is 1,109 m long, and the PE monofilament is 388 m long. Containing 296 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.

in-akustik Reference NF-2405 AIR Pure Silver NF Cable

XLR 180° connector

Conventional XLR connectors are designed for fixed positioning, which often forces the cable to twist. This load causes increased mechanical stress. In contrast, our proprietary XLR 180° connector offers a unique and adjustable alignment that allows the connector to be rotated within a range of +/- 90 degrees. This flexibility not only reduces the mechanical stress on the cable, it also enables optimum alignment of the cable in relation to the device sockets, which are often arranged differently from device to device.

in-akustik Reference NF-2405 AIR Pure Silver Connector

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.

in-akustik Reference NF-2405 AIR Pure Silver NF Cable

PE network jacket

Most cables have a PVC sheath surrounded by a textile or plastic braid. This sheath is meant to protect the cable from mechanical damage. At in-akustik, we deliberately don’t use a PVC sheath in order to avoid capacitance and any consequent dielectric losses. The sheaths for AIR cables are made of polyethylene monofilaments. These hold the conductors tightly together, reduce microvibrations and allow extreme dynamic peaks to be processed in an unadulterated fashion.

  • in-akustik Reference NF-2405 AIR Pure Silver NF Cable
  • in-akustik Reference NF-2405 AIR Pure Silver NF Cable
  • in-akustik Reference NF-2405 AIR Pure Silver NF Cable
in-akustik Reference LS-4005 AIR Cable Detail

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.

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Length: 1 m
Good sound needs space! In developing our Air technology, we have proven that an audio cable’s insulation plays a decisive 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. A cable’s geometry also influences these factors. Bigger distances mean less load. This is exactly where our NF-4005 AIR Pure Silver comes in: The AIR helix design and the cable’s dimensions create even more space and air between the signal conductors. The cable thus forms a wide audiophile corridor and rolls out the red carpet, so to speak, for every sound detail. 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. New RCA SL connectors (SolderLess): Soldering is a proven and established connection technology, but it is not without its weaknesses. These include the solder used in the signal path, which reduces the conductivity, and the generation of thermal voltages, even if it is kept to a minimum. With our recently developed SL (SolderLess) RCA connector, the connections from the signal conductor to the contact element are pressed with the highest precision and with a pressure of 1.5 tonnes. A further seemingly tiny improvement that brings great rewards in terms of audio performance. Click here and discover the exciting details

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