Description

Ferrum OOR Balanced Headphone Amplifier

Reference-Class Headphone Amplifier for Pure, Powerful Sound

The Ferrum OOR is a high-performance balanced headphone amplifier created for audiophiles who demand uncompromising sound quality from their personal listening system. Designed and manufactured in Europe, OOR combines exceptional power output, ultra-low distortion, and precision analog engineering to deliver a transparent, dynamic, and highly musical listening experience.

Whether driving sensitive in-ear monitors, high-impedance dynamic headphones, or demanding planar magnetic designs, the OOR provides effortless control, exceptional clarity, and remarkable detail across the entire frequency range.

Fully Balanced Analog Design

Built around a fully balanced amplifier architecture, the OOR minimizes noise and distortion while maximizing channel separation and signal integrity. The result is a wide, immersive soundstage with accurate imaging, natural tonal balance, and impressive dynamic contrast that brings every recording to life.

Its carefully engineered analog circuitry preserves the original character of your music, allowing vocals, instruments, and fine details to be reproduced with outstanding realism.

High Power for Every Headphone

The OOR is designed to deliver substantial output power across a broad range of headphone impedances, ensuring optimal performance regardless of the headphones you use. From efficient studio headphones to flagship planar magnetic models, the amplifier maintains excellent control, tight bass response, and effortless dynamics without sacrificing transparency or musicality.

This versatility makes OOR an ideal partner for both home audiophile systems and professional monitoring applications.

Flexible Connectivity

Equipped with balanced XLR and unbalanced RCA inputs, the OOR integrates easily with a wide range of DACs and audio sources. Balanced XLR and 4-pin headphone outputs, together with single-ended connections, provide flexibility for virtually any premium headphone setup.

Its precision analog volume control ensures accurate channel balance and smooth adjustment across the entire listening range.

Enhanced Performance with Ferrum HYPSOS

The OOR is fully compatible with the optional Ferrum HYPSOS hybrid power supply through the proprietary Ferrum Power Link (FPL). Pairing the two products provides cleaner, more stable power delivery that can further improve dynamics, background silence, detail retrieval, and overall sonic refinement.

For listeners seeking the highest possible performance, HYPSOS unlocks the full potential of the OOR amplifier.

Premium European Engineering

Constructed with a durable aluminum chassis and minimalist industrial styling, the OOR reflects Ferrum's commitment to precision engineering and long-term reliability. Its compact dimensions make it equally suitable for desktop headphone systems and larger high-end audio installations.

Every aspect of the amplifier has been developed with one goal in mind: delivering reference-quality headphone performance without compromise.

Key Features

• Fully balanced reference headphone amplifier

• High output power for dynamic and planar magnetic headphones

• Ultra-low noise and distortion analog circuitry

• Wide dynamic range with excellent channel separation

• Balanced XLR and unbalanced RCA inputs

• Balanced and single-ended headphone outputs

• Precision analog volume control

• Compatible with Ferrum HYPSOS via Ferrum Power Link (FPL)

• Compact premium aluminum chassis

• Designed and manufactured in Europe

• Ideal for reference home audio and professional monitoring

Discover Every Detail in Your Music

The Ferrum OOR is engineered for listeners who expect the very best from their headphones. Combining powerful balanced amplification, exceptional transparency, and premium European craftsmanship, it delivers a refined listening experience with outstanding accuracy, dynamics, and musical emotion, making it an exceptional centerpiece for any high-end personal audio system.