Dynamic music places an impulsive load on the output stages of an audiophile hi-fi chain. That’s why we developed the Referenz AC-4005 AIR mains cable. Specially developed clips are used to keep the individual wires at a defined distance apart. The resulting “air dielectric” reduces power losses to a minimum and significantly improves the electrical parameters.
The multicore structure leads to an overlap, so compensating for the magnetic fields around the individual cores. The line inductance is greatly minimized, depending on the number of cores, and the skin effect caused by steep current flanks at high frequencies is clearly and audibly reduced. In addition, the usable conductor cross-section is effectively extended, and without the negative effects of thicker cables.
A dense shielding braid of tinned copper protects neighboring cables and components against external interference and also prevents oxidation. Each of our Referenz AIR mains cables is tested and inspected with the utmost care. The results are documented, and each cable is given an individual serial number.
Background
A hi-fi system basically reproduces nothing other than modulated household electricity. Ideally, this should be made available to the components without any further inhibition. However, dynamic music with complex bass runs places an impulsive load on the electronics of the integrated or power amplifiers belonging to a high-end hi-fi system. Here the power cable plays a significant role. The challenge for power cables on audio devices with a high sound quality are extreme current peaks that can generate strong magnetic fields and interference radiation, leading to power losses at line and transition resistances.
These rapidly changing increases and decreases in current must be passed on to the electronic components with as little delay as possible, since a blocked current flow would have a negative effect on the sound. Physics tells us that an electrical conductor has capacitive and inductive characteristics in addition to its resistance, and these disturb the flow of energy between the power socket and the hi-fi device. The goal is always a power supply without any time-lag and with minimum loss, enabling large amounts of energy to be transported in a very short time. Accordingly, the power cable from the wall socket to the hi-fi equipment plays a very important role in the transmission chain.
Perfect sound for audiophiles: Specially designed for connecting up top-notch high-end audio systems, the Referenz AIR power supply cables are based on the already legendary in-akustik AIR technology. Their many special features effectively counteract the undesirable effects encountered while supplying power to high-performance audio components and make supply cables what they should ideally be: superb energy pipelines for perfect high-end sound.
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.
Multicore
The multicore structure leads to an overlap, so compensating for the magnetic fields around the individual cores. This greatly or extremely minimizes the line inductance, depending on the number of cores. In addition, the higher number of individual cores significantly reduces the skin effect caused by steep current flanks at high frequencies. The division into several cores also increases the usable conductor cross-section without the negative effects of thicker cables.
Shielding
Unlike most other power cables, the in-akustik Referenz AIR cables are encased in a dense shielding braid of tinned copper. This protects the hi-fi system from external interference and any nearby cables and audio components from radiating interference fields caused by the high current peaks in the cable. The tinning of the braid also prevents any oxidation of the cable.
Safety
Safety is of the utmost priority to us: However much we focus on high-end sound, safety plays a particularly important role in this cable category. That‘s why every Referenz AIR power cable is tested and inspected extremely carefully. In addition to an exhaustive functional test, each cable is also subjected to an insulation and high-voltage test. The result is recorded and each cable is given an individual serial number; each cable is also certified and complies with and is of course CE-compliant.
Application: High-end mains power connection
Cable diameter: 40 mm
Certificate: Yes
Conductor cross-section: 2 x 4 mm² (16 x 0.5 mm²)
Conductor material: High-purity copper
Conformity: CE, REACH, RoHS
Contact enhancement: Rhodium-coated
Design: 16-fold multicore | Ground wire
Dielectric: Air
Individual inspection: Function, High voltage, Insulation, Protective conductor
Jacket: PE network jacket
Length: 1 m, 1.5 m, 2 m, 3 m
Load capacity: 3680 W (230 V AC/16 A)
Phase marking: Yes
Protection class: 1
Rated current: 16 A
Rated voltage: 250 V AC | 50/60 Hz
Shielding: Dense copper braid, tin-plated (oxidation protection)


