in-akustik Audio Cables
Phono-2405 AIR
Reference phono cable. 25 mm Air Helix.
The Phono-2405 AIR applies in-akustik's full 25 mm Air Helix architecture to the most demanding signal in any system — the low-level output of a moving-coil or moving-magnet cartridge. Point-to-Point Air Helix clips suspend the conductors in air for near-zero capacitance, while Cross Link Super Speed waveguides and dense tin-plated copper braid shielding protect against RF and electromagnetic interference. All termination and socket combinations (SME-90°, SME straight, 5-pin DIN, RCA, XLR) are available across the Phono AIR range — contact us for the configuration your tonearm requires.
At a Glance
●25 mm cable diameter
●Point-to-Point Air Helix
●Cross Link Super Speed waveguides
●Dense tin-plated copper braid shield
●All termination types available (SME / RCA / XLR / DIN)
●Handmade in Germany
Key Features
25 mm Air Helix Architecture
Full Referenz-grade air-dielectric construction — conductors held in air by Point-to-Point clips for vanishing capacitance on the most sensitive signal in your system.
Cross Link Super Speed Waveguides
Hand-threaded braided waveguides with lacquered wires prevent eddy currents, preserving transient detail from cartridge to phono stage.
Double-Shielded Construction
Dense tin-plated copper braid with additional ground wire shields the phono signal from RF, mains noise, and nearby electronics.
Matched to Your Tonearm
SME-90° to dual XLR as standard. SME straight, 5-pin DIN, RCA, and XLR combinations all available — specify your tonearm connector when ordering.
Technologies Inside
AIR Technology
Air is the perfect insulator.
Now in its fifth generation, AIR technology uses air as the primary dielectric instead of traditional plastics like PVC. Conductors run freely suspended through the cable via precision-engineered clips at defined intervals, reducing capacitance by approximately 83% compared to standard cables. The Point-to-Point Air Helix architecture extends this principle from connector to connector for almost loss-free signal transmission.
Cross Link Super Speed
Eliminating eddy currents at high frequencies.
Cross Link Super Speed waveguides are hand-threaded into the cable structure to prevent eddy current effects at high frequencies. This preserves the full detail and extension of the audio signal across the entire audible spectrum, ensuring transients remain sharp and high-frequency information arrives intact.
Multicore Architecture
Overlapping fields, lower inductance.
in-akustik's multicore conductor arrangements use four-fold structures where the overlapping magnetic fields of individual conductors deliberately cancel each other out. This reduces inductance and minimises the skin effect at high frequencies, delivering a more neutral, dynamic frequency response.
360 Degree Pressure-Grouted Connectors
Three-axis rotation. 1.5 tonnes of force. Zero solder.
in-akustik's 360-degree BFA banana and spade lug connectors move across three axes, making connection and disconnection effortless while preventing cable stress. Instead of soldering, which introduces additional metal alloys and weak points, each connector is pressure-grouted at 1.5 tonnes of force — creating a gas-tight, vibration-resistant bond. BFA bananas use beryllium copper with solid metal housings, while spade lugs use tellurium copper, both rhodium-coated for lasting conductivity and corrosion resistance.
AIR Helix Point-to-Point
Fifth-generation air insulation, from plug to plug.
The AIR Helix design suspends conductors in a helical arrangement through the cable using specially engineered clips at precise intervals. Air replaces traditional plastic insulation as the primary dielectric, reducing capacitance by approximately 83%. The fifth-generation Point-to-Point innovation extends this architecture from connector to connector, with specialised transitions for each plug-cable combination eliminating the last remaining sections of conventional insulation.
Gallery
A closer look at the Phono-2405 AIR.
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Experience the Phono-2405 AIR
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For complete specifications and technical details, visit the official in-akustik website.