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in-akustik Streaming Cables
Pure silver USB. 25 mm Air Helix. A to B.

The USB-2405 AIR Pure Silver replaces every copper conductor with high-purity solid silver within the 25 mm Air Helix architecture. Silver's 6% higher conductivity and 1.5x faster electron drift deliver enhanced timing precision and detail retrieval in digital audio transmission. Identical construction to the copper USB-2405 AIR — same Air Helix clips, Cross Link Super Speed waveguides, and 180-degree rotatable connectors with rhodium-plated tellurium copper contacts. Hand-assembled in Germany.
High-purity solid silver at 61.35 S/m conductivity — 6% superior to copper with 1.5x faster electron drift for enhanced timing precision.
Identical Air Helix construction to the copper version — silver conductors suspended in air for zero dielectric losses.
Braided silver conductor structure with lacquer coating prevents eddy currents, working in concert with silver's fast electron drift.
USB A and USB B connectors rotate for stress-free installation, with rhodium-plated tellurium copper contacts.
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.
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.
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.
Air insulation for digital data.
Specialised clips form a supporting framework inside the 25 mm diameter cable, holding signal pairs in a helical shape at defined distances, freely suspended in air. Two connecting bridges keep clips evenly spaced while maintaining flexibility. Air as the dielectric eliminates capacitance and dielectric losses entirely, reducing jitter and ensuring bit-perfect data transmission from connector to connector.

A closer look at the USB-2405 AIR Pure Silver.
Visit our showroom for a personal demonstration. Hear the difference for yourself.
For complete specifications and technical details, visit the official in-akustik website.