S25 Speaker Cable | 425
Quality: Exzellenz€341.99
Product information "S25 Speaker Cable | 425"
The S25 Speaker Cable 425 is the most powerful model in the series, designed for audiophile setups with high power reserves and long cable runs. The large conductor cross-section and low-inductance multicore design ensure exceptionally low-loss transmission – even under high load or long cable lengths. The sound benefits from a particularly controlled, deep-reaching bass with precise punch, clearly defined mids, and an open, detailed high-frequency reproduction. The spatial presentation is stable and wide. Thanks to high-quality materials such as fine-stranded OFC copper, solid crimp contacts, and gold-plated connectors, the signal remains unaltered along the entire length. Its discreet, functionally elegant design and surprisingly high flexibility despite the large cross-section allow for neat, unobtrusive installation – even in complex rack setups or close to walls.
Click here to discover exciting details| Application: | HiFi speaker cable |
|---|---|
| Cable diameter: | 12.5 mm |
| Coding: | Red | Black |
| Color: | Darkblue |
| Conductor design: | 50 x 0.25 mm (2.5 mm²) |
| Conductor material: | High-purity OFC copper |
| Conformity: | CE, REACH, RoHS |
| Connection type: | SBW, SW |
| Connector assembly: | Pressure-grouted contacts (1.5 tonnes), Screw contacts |
| Contact enhancement: | Gold-plated |
| Contact material: | Brass |
| Cross-section: | 2 x 5 mm² (4 x 2.5 mm²) |
| Customized assembly: | On request |
| Design: | 4-fold multicore |
| Dielectric: | PE |
| Fork width: | Stepped 6/8 mm |
| Indicated signal direction: | Yes |
| Individual inspection: | Continuity and short circuit testing of all conductors |
| Jacket: | PVC |
| Length: | 2 m, 2,5 m, 3 m, 3,5 m, 4 m, 4,5 m, 5 m |
| Special feature: | Highly flexible |
| in-akustik product group: | Loudspeaker cables |
| in-akustik category: | Exzellenz speaker cables |
| Quality: | Exzellenz |
| Technology: | Multicore |
| Connector: | Banana Cable lug Easy Plug |
| Made in Germany: | Yes |
| Free trial listening: | Yes |
- 1 x Stereo Set S25 Speaker 425
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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The S25 Speaker Cable 425 is the most powerful model in the series, designed for audiophile setups with high power reserves and long cable runs. The large conductor cross-section and low-inductance multicore design ensure exceptionally low-loss transmission – even under high load or long cable lengths. The sound benefits from a particularly controlled, deep-reaching bass with precise punch, clearly defined mids, and an open, detailed high-frequency reproduction. The spatial presentation is stable and wide. Thanks to high-quality materials such as fine-stranded OFC copper, solid crimp contacts, and gold-plated connectors, the signal remains unaltered along the entire length. Its discreet, functionally elegant design and surprisingly high flexibility despite the large cross-section allow for neat, unobtrusive installation – even in complex rack setups or close to walls.
Click here to discover exciting detailsLike the flagship model, the LS-204 is also based on Micro Air technology. The difference lies in the multicore architecture. Compared to the XL version, the LS-204 has four instead of six Concentric Copper conductors. This cable boasts an agile character and was primarily developed for slim floorstanding speakers with smaller bass drivers. The Referenz LS-204 Micro AIR is available as a single-wire version with BFA bananas or spade lugs, or as an Easy Plug version.
Click here and discover the exciting details€341.99*
€557.00*
Sound doesn't start at the speaker
Speaker cables are far more than just wires between the amplifier and the speaker – they help determine how much of the music actually reaches you. Electrically, every cable acts like a filter made up of resistance, inductance, and capacitance. These characteristics influence whether details are preserved or whether highs lose brilliance and lows lose precision. Especially with speaker cables, conductor cross-section, copper quality, and construction are crucial for low-loss, dynamic signal transmission. The S25 series relies on high-purity OFC copper, well-designed multicore constructions, and flexible, durable materials. This keeps the music signal clear, true to impulse, and authentic – so you hear what's really on the recording. A good cable doesn’t color the sound, it transmits it: It is the solid bridge between your components and musical expression.
Multicore technology: More control, more sound
A key technical feature of the S25 speaker cables is their multicore design. Unlike traditional conductors, several fine-stranded individual wires run in parallel – this reduces inductance, improves high-frequency performance, and preserves signal integrity even during fast transients. The symmetrical distribution of the conductors also minimizes interference, as magnetic fields partially cancel each other out. This is especially evident in the Speaker 415 and 425 models, delivering tight, well-defined bass, precise imaging, and brilliant high-frequency detail. The result: high impulse fidelity, greater control, and a spatial soundstage that remains stable – even during complex passages.
OFC copper: Pure material for pure music
For the S25 series, we use only high-purity, oxygen-free copper (OFC) with a purity level of at least 99.95%. This material offers excellent electrical conductivity and reduces transmission losses – even over long cable runs or with high current flow. OFC copper is also highly resistant to corrosion, ensuring long-term sound stability. Combined with high-quality insulation materials and gold-plated connectors, the signal remains unaltered – from the amplifier output to the speaker terminals. S25 cables deliver music with high transparency and authentic dynamics – honest, direct, and without artificial coloration.
Crimp technology & gold-plated contacts
Connector joints are critical points in any signal path – they determine whether sound quality remains consistent. The S25 series uses professional crimp technology: fine-stranded copper conductors are gas-tight pressed under high pressure, effectively preventing corrosion and ensuring lasting contact stability. Gold-plated plugs provide consistently low contact resistance and are resistant to oxidation – even with frequent plugging and unplugging. This combination guarantees a reliable, sonically clean connection that neither swallows details nor slows down dynamics. For lasting sound fidelity – completely maintenance-free.
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Well-engineered technology
The S25 series combines high-quality materials, thoughtful engineering, and skilled craftsmanship into an audiophile cable concept that makes high-end sound accessible to newcomers.
Every cable a promise: Quality assurance in the S25 series
Before any S25 series cable leaves our workshop, it is individually tested for complete signal continuity. This ensures that every connection, from plug to conductor, functions flawlessly. This final inspection is part of our uncompromising commitment to quality – because even at the entry point to high-end hi-fi, every detail matters to us.
Manufacture quality for entry into high-end
The S25 series was developed as an entry point into the world of high-end hi-fi – 100% made in Germany. Each cable is created in our in-house workshop: carefully handcrafted, individually tested, and technically refined down to the last detail. We invest in high-quality materials, solid expertise, and genuine craftsmanship – not in glossy foil or excessive packaging. The sturdy cardboard packaging protects what matters: your listening experience. Because sound is not created by appearances, but by quality – honest, direct, and authentic.
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The LS-104 is an excellent entry-level model to the Micro AIR series. It already stands out clearly from standard cables and demonstrates the acoustic potential of this technology. Sensitive amplifiers in particular harmonize excellently with this cable. The Referenz LS-104 Micro AIR provides an open and relaxed sound. It is also available with BFA bananas or spade lugs and as an Easy Plug version. Click here and discover the exciting details
The S25 Interconnect Cable provides a sonically neutral and technically clean connection for high-quality hi-fi applications. Its highly flexible construction and discreet design ensure easy integration into existing systems. The signal conductors are made of high-purity, oxygen-free copper (OFC) and insulated with foamed polyethylene – a material with an especially low dielectric constant that supports low-loss signal transmission. The symmetrical dual-mono design with separate conductors for positive and negative ensures stable and low-interference signal routing. A dense braid of 186 fine copper strands serves as effective shielding against external interference – such as from Wi-Fi or Bluetooth devices. The gold-plated full-metal connectors provide long-term reliable contact with low transition resistance and high mechanical stability. The cable is manufactured in Germany and each unit is individually tested for signal continuity. Click here to discover exciting details
The S25 Interconnect Cable offers a sonically neutral and technically high-quality connection for demanding hi-fi and studio applications. Its highly flexible design and discreet appearance allow for easy integration into any setup. The signal conductors are made of highly pure, oxygen-free copper (OFC) and insulated with foamed polyethylene - a material with a particularly low dielectric constant that promotes low-loss signal transmission. The true balanced construction with separate conductors for hot, cold, and ground ensures stable, low-noise signal routing and enables effective suppression of hum interference and external noise sources. A dense copper braid made of 186 fine wires serves as effective shielding against external influences such as Wi-Fi, Bluetooth, or power supplies. The gold-plated solid metal XLR connectors guarantee a permanently reliable contact with low contact resistance and high mechanical stability. The Connect 212 is made in Germany and individually tested for signal integrity - ensuring uncompromising quality and long-lasting listening pleasure. Click here to discover exciting details
Compared to the NF-204 Micro AIR, the NF-104 Micro AIR has a conventional, coaxial architecture. In addition to the Micro AIR technology, another special feature of the NF-104 is the newly developed RCA connector, which is completely solder-free. Omitting the solder significantly reduces transition resistance and element formation. As the name suggests, the NF-104 harmonizes particularly well with the LS-104 speaker cable. Both cables are the perfect way of entering the world of Micro AIR technology. Click here and discover the exciting details
