Oehlbach Series 1 XLR 2m

Oehlbach’s Series 1 XLR balanced analog audio cable is designed for home cinema and hi-fi enthusiasts seeking a quality connection between their sources and amplifiers, without necessarily investing in the manufacturer’s high-end range.

With several decades of experience, Oehlbach brings its expertise to bear here, offering a product that is both accessible and high-performing. The Series 1 XLR features HPOCC monocrystalline copper conductors plated with silver—a technology usually reserved for more expensive models.

Premium Construction

Oehlbach’s design philosophy is evident in every detail of the Series 1 XLR. The internal conductors use HPOCC (High Purity Oxygen-free Copper Cast), a monocrystalline material that eliminates the crystalline discontinuities responsible for micro-distortions. This ultra-pure copper is then silver-plated to optimize surface conductivity, which is particularly effective for high frequencies.

The triple-layer shielding is one of this cable’s major strengths. Two aluminum foils surround a copper braid, creating an electromagnetic barrier that is especially effective against radio frequency interference. This architecture protects the signal from disturbances generated by WiFi devices, mobile phones, and other sources of interference commonly found in our homes.

The 3-pin female XLR connectors, machined from solid metal, feature 24-carat gold-plated contacts that ensure optimal resistance to oxidation. The locking system secures the connection while allowing repeated unplugging without premature wear.

Transmission Technologies

With its characteristic impedance of 110 ohms and capacitance of 45 picofarads per meter, the Series 1 XLR strictly adheres to balanced transmission standards. This balanced configuration naturally cancels out common-mode noise—a fundamental principle of XLR connections that explains their popularity in the professional world.

The cable’s circular geometry, with a diameter of 14 millimeters, may seem substantial but is necessary to accommodate the triple shielding without compromising flexibility. The 120-millimeter bending radius allows for tight installations while preserving the integrity of the internal conductors.

The robust plastic outer sheath combines mechanical strength with flexibility. Its distinctive blue color makes identification easy in complex setups—a practical detail appreciated when connecting to the rear panels of amplifiers.

Acoustic Performance and Neutrality

The Series 1 XLR prioritizes neutrality over showy effects. The silver-plated HPOCC conductors transmit the signal without coloration, preserving the sonic signature of the connected devices. This purist approach is particularly suited to audiophiles who want to hear their recordings without artificial enhancement.

The triple shielding preserves the signal’s dynamics, avoiding the subtle compression that can affect complex orchestral passages. Percussive transients retain their impact, while stereo imaging gains precision thanks to the elimination of crosstalk.

In home cinema setups, this cable excels at transmitting multichannel analog signals, maintaining tonal coherence between different amplification channels. The low parasitic capacitance preserves frequency extension, which is crucial for faithfully reproducing ambiences and directional effects.

Practical Applications and Compatibility

The 75-centimeter Series 1 XLR fits into many configurations. This length is ideal for short runs between a preamplifier and a power amplifier, or for connecting a high-end analog source to an integrated amplifier equipped with XLR inputs.

In home cinema setups, this cable is excellent for linking a surround processor to multichannel amplifiers, maintaining the sonic coherence essential for convincing reproduction. Its balanced construction eliminates the risk of ground loops, which are common with unbalanced connections.

Owners of Hifiman, FiiO, or other audiophile brands will appreciate the transparency of this cable, which reveals the qualities of their equipment without masking or embellishment. Its neutrality also suits Fyne Audio systems or setups with Nagaoka cartridges.

Technical Specifications

Connectivity

• Connector type: 3-pin XLR
• Configuration: female
• Signal direction: IN / OUT
• Lockable connectors: yes
• Connector material: solid metal
• Contact finish: 24-carat gold-plated

Electrical Characteristics

• Signal type: analog audio
• Configuration: balanced cable
• Characteristic impedance: 110 Ohm (at 1 MHz)
• Capacitance: 45 pF/m

Physical Construction

• Shielding: triple shielding
  • 2 layers of aluminum foil
  • 1 copper braid
• Conductor material: HPOCC (mono-crystalline oxygen-free copper), silver-plated
• Geometry: round
• Cable diameter: 14 mm
• Bending radius: 120 mm
• Outer sheath material: robust, highly flexible plastic
• Color: blue
• Length: 2 m

Performance and Technologies

• High-purity HPOCC conductors for lossless signal transmission
• Triple-layer shielding for maximum protection against interference
• 24-carat gold plating for reliable, long-lasting connections
• Rugged design suitable for intensive use
• Optimal, dynamic, and detailed audio transmission
• Effective reduction of unwanted noise
• Highly flexible sheath for easy handling