Skip to content

Inakustik - LS-4005 - Reference Speaker Cable

Original price $14,500.00 - Original price $14,500.00
Original price
$14,500.00 - $14,500.00
Current price $14,500.00
1+ in stock
1+ in stock

Voted Australia's #1 Hi-Fi Store by Sound+Image Magazine.

Trusted by 40,000+ Aussies who love our Award-Winning Service.

🇦🇺 About Our Award-Winning Service

Transform Your Listening Space: Personalised Expertise at Every Step

Ever felt the frustration of a mismatched audio system? The hours lost deciphering reviews, and the disappointment when it doesn't meet your expectations? We understand because we've been there.

Meet Stuart, Yvonne, Nathan, and Vaughan. But more importantly, meet the solution to your audio dilemmas.

Why Trust The Audio Tailor?

  1. Awarded Excellence: 🏆 Honored as Australia’s Hi-Fi Retailer of the Year in 2021 and 2022, and hailed as Queensland’s Best Hi-Fi Retailer. Not just accolades, but a testament to our dedication.
  2. Genuine Audiophiles, Not Salesmen: We aren’t just in this for sales. We're in it for the love of sound, and to enhance your auditory experiences.
  3. Personal Touch: Our commitment is to craft an audio experience tailored to you. Forget one-size-fits-all.

Our Promise?

To be with you at every step. From envisioning a serene evening with your favourite album to setting up the ultimate cinematic audio for movie nights. And once that’s clear, we’ll guide you on making it a reality - harmonising your budget, room dynamics, and dream.

What Makes Us Different?

We aren’t satisfied with the status quo. We rigorously test products, delve deep into the details, ensuring you get nothing but the best. We're about quality, not just brand names.

Act Now!

Remember, the journey to impeccable sound doesn't have to be solo. Let us be your guide.

Ready to Elevate Your Audio Experience?

Call 1300 308 711
Or visit our Brisbane store.

ℹ Product Information

"Point-to-Point Air Helix" for pure sound

Air as the ultimate dielectric minimizes capacitance

Cross Link Super Speed ​​waveguide for a balanced sound

BFA banana & cable lug adjustable by 360


The LS-4005 AIR high-end speaker cable offers audiophile enthusiasts unique sound experiences. In the new speaker cable Reference LS-4005 AIR, we have consistently developed the outstanding properties of its predecessor, the LS-4004 AIR. The point-to-point Air-Helix construction now allows the AIR-Helix architecture to be used from connector to connector and not just between sleeves. Another innovation is the 360° BFA bananas and cable lugs we developed for effortless and comfortable connection to the terminals. These and other technical refinements make the already very special AIR cables true masterpieces.

Find out all the details about the outstanding technical properties of this cable, the innovations of the 05th generation and the physical approach of AIR technology below.

The air helix structure guides the conductors freely floating through the cable

The air helix structure allows for almost 100 percent air content between the signal conductors. Specially developed clips form the supporting framework. Lined up inside the cable, a large number of clips lead the signal conductors freely in the air in a helical shape through the cable. The flexibility of this construction is achieved via two bars that hold the clips together and precisely at a distance. This architecture is unique. The result is low line capacitance and low dielectric losses - an audiophile milestone for open and genuine sound experiences.

Inakustik's physical approach: Minimize losses for faithful reproduction

The reference AIR cables transport the audio signals unadulterated and with little loss between source, amplifier and loudspeaker. You experience music as the artists expressed it emotionally at the moment of recording. Sensual, fine, funny, orchestral to thrilling, rocky. Vocals and instruments are conveyed authentically. Everything seems alive. Emotions jump out suddenly. The pieces of music touch and awaken feelings, even after listening to them for the hundredth time.


  • The AIR Helix: The air helix structure guides the signal conductors in a free-floating manner through the cable and allows for almost 100 percent air content between the signal conductors.
  • Dialectric: Air as a dielectric reduces the capacity to a minimum. Compared to other insulators, air does not have any capacity-increasing properties and does not produce any dielectric losses.
  • Multicore structure: The clever arrangement of the conductors in the multiple nested multicore structures creates overlapping areas of the magnetic fields that significantly reduce the inductance.
  • The ladder: The Cross Link Super Speed ​​waveguide avoids so-called skin effects. It delivers a balanced sound even with complex music passages and high levels
  • Pressed contacts: The connectors are pressed directly into the conductor material of the cable using a special tool with a force of 1.5 tons. Contact resistance or other negative effects of soldering are avoided.

Point-to-Point Air-Helix for seamless transition into the connectors

New in the 5th generation is the point-to-point connection of the Air Helix construction from Inakustik. Specially designed transitions for every type of cable and connector ensure a direct, immediate connection. From cable start to cable end, AIR helix construction from point to point. What sounds banal at first has an impact. The sound signals are transported with little loss, even the last few centimeters. The sound is even more detailed and dynamic.

The multicore structure

A critical conductor in loudspeaker cables is inductance. The clever arrangement of the conductors in the multiple nested multicore structures creates overlapping areas of the magnetic fields that significantly reduce the inductance. The entire frequency spectrum, including high tone frequencies and dynamic pulse sequences, are transmitted unhindered and without any time delay. Music sounds more detailed. The sound is more finely dynamic. All details are worked out precisely and harmoniously at the same time.

The ladder structure

The Cross Link Super Speed ​​waveguide avoids skin effects caused by eddy currents in the conductor. Thanks to the braided structure, the waveguide transmits even extreme current peaks precisely. A layer of varnish around each wire prevents eddy currents within the conductor and protects against oxidation. The result is a conductor that transmits a balanced sound image with lively timbres that are not overemphasised in any area, even with complex music passages and high levels.

The conductor material

The conductor material plays an essential role in the transmission of sound signals. Any contamination worsens the conductance and increases the background noise. Inakustik only use pure, oxygen-free copper in their AIR cables. They attach particular importance to only using high-purity copper batches. The quality of the copper is determined in complex processes before it is drawn to the required diameter in the wire drawing machine over several stages.

BFA - Banana & Spade 360°

Three axes of the 360-degree BFA and Spade connectors make connecting extremely easy. Stress on cables and devices due to laborious installation is a thing of the past. The plugs can be easily connected to the different manufacturer terminals. No complicated bending is required; the contact surfaces and the associated contact resistance are not affected. The plugs can be connected easily. The visually appealing connection perfectly complements the excellent sound.

Rhodium plated

The best cable requires optimal connection technology. We use tellurium copper, a harder metal alloy that maintains the high conductivity. Compared to brass connectors, the conductivity values ​​are significantly better. The rhodium coating ensures long-lasting contact and corrosion resistance. Even with frequent modifications, the stable conductivity is maintained. This is better than gold contacts, which wear out more quickly.

Pressed contacts (1.5 tons)

The contact elements of the plugs are pressed directly into the conductor material using a special tool with a force of 1.5 tons. This creates a stable and reliable connection without the use of solder or ferrules. Contact resistance and negative effects are avoided to ensure optimal signal transmission.

The cable manufacturer

The heart of Inakustik is their factory. From here they write a success story – with a lot of joy at work, passion for music and attention to detail. For them, enjoying music means creating a sound experience that comes as close as possible to the original recording and the artists' interpretation. That's why you'll find committed people, driven by curiosity and a sense of precision, fascinated by music and extraordinary things, like the development of Inakustik's elaborate AIR cables.


Each cable is handcrafted with the utmost care. Inakustik's extensive know-how and the qualifications of their team enable them to manufacture the complex cables tailor-made. In addition to using the finest materials, their most important asset is the hands of their cable workers. They assemble exceptional cables with the greatest care, calm and dedication.

Precise quality control

Manufacturing is carried out to the highest standards. Precise quality control is carried out before, during and after assembly. Inakustik control the tolerances of each item. At every production step they check the configuration and electrical system for short circuits. They carry out functional and mechanical tests. No product leaves their factory without a final quality control.

Did you think…

...that Inakustik's LS-4005 AIR (2 x 3 m SBW) consists of 406 individual parts? The copper wire used is 2,688 m long and the PE monofilament is 1,967 m long. The Air Helix structure of this type, which has 2,379 holes, requires the utmost skill when threading the cables.


    Connection Type: SW
  • Application: High end speaker cable
  • Construction: 16-fold double layer multi-core
  • Dielectric: Air
  • Cable diameter: 40mm
  • Conformity: CE, REACH, RoHS
  • Contact material: Beryllium copper (BFA banana) , tellurium copper (cable lug)
  • Contact finishing: Rhodium coated
  • Ladder structure: Cross Link Super Speed ​​Waveguide
  • Conductor material: high-purity OFC copper
  • Conductor cross section: 2 x 9.6 mm² (16 x 1.2 mm²)
  • Length: 2 x 3m
  • A coat: PE Network Jacket
  • Connector housing: Full metal
  • Connector assembly: Contacts pressed (1.5 tons)
  • Technology: AIR Helix point to point, multicore
  • Connector highlight: BFA banana 360°, Cable lug 360°
  • Made in Germany
ℹ Specifications

Transform Your Experience with Inakustik

Get expert advice. Speak with our team. We're Australia's Inakustik experts.
Voted #1

Australian Hi-Fi Retailer Of The Year

40K+ Aussies Trust Us

Decades of Experience

Highest Rated Hi-fi Store

Australia's Highest-Rated Hi-Fi Store

Ridiculously Good Service

AV Experts, Not Salespeople

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare