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Headphone Amplifier Ferrum OOR Black
Description
The Ferrum OOR is a flagship discrete analogue headphone amplifier designed to deliver ultra-low distortion, exceptional dynamics, and fatigue-free detail. Engineered around a fully balanced signal path for both XLR and RCA inputs, OOR features an in-house developed discrete power amp design with advanced transistor control that keeps output transistors active at all times to eliminate crossover distortion. With intuitive controls via three front-panel knobs, it offers effortless driving power and authority for virtually any headphone model. While providing outstanding performance on its own, OOR is equipped with the proprietary Ferrum Power Link (FPL) to pair seamlessly with the HYPSOS Hybrid Power System for maximum musicality and elevated audio performance.
Specification
| Frequency response | 20 Hz – 100 kHz ±0,1 dB |
|---|---|
| Input impedance | 94 kΩ |
| Power consumption | V nečinnosti (Idle) < 15 W |
| Weight | 1,8 kg (3,97 lbs) |
| Inputs | XLR, RCA, 2,5 mm DC konektor (kladný stred), vlastný 4-pinový DC konektor |
| Dynamic range | 130 dB (vážený A) |
| Headphone Output | Symetrický 4-pinový XLR, 6,35 mm jack |
| Output power (balanced) | 1 600 mW @ 300 Ω, 8 W @ 60 Ω |
| Dimensions (W × H × D) | 21,7 cm × 20,6 cm × 5,0 cm (8,6" × 8,1" × 2,0") |
| Output Impedance (Single-Ended) | 44 Ω (predzosilňovač) |
| Output Impedance (Headphones) | < 0,3 Ω |
| Power Adapter | 100 – 240 V AC na 22 – 30 V DC |
Ferrum
Ferrum Audio: Polish Passion for Detail, Craftsmanship, and Pure Sound
Ferrum Audio is a highly acclaimed Polish pioneer in headphone amplification and high-end power supply engineering. Established in early 2020 by its parent company HEM in the Warsaw region, the brand draws inspiration from its local heritage of iron metallurgy and fine craftsmanship. Originating from the very countryside where Frédéric Chopin was born, Ferrum shares the ambition of bringing true musical artistry to a global audience. The name itself stems from the Latin word for iron, symbolizing strength, endurance, and uncompromising engineering integrity.
Ferrum Audio fuses decades of research with local manufacturing under a clear mission: to deliver an authentic audiophile experience through compact, beautifully crafted components that offer extraordinary value. The brand redefined power delivery standards with its flagship hybrid power system, HYPSOS. This was followed by the fully balanced OOR headphone amplifier, which set a new benchmark for personal audio, and the ERCO DAC/headphone amplifier. Designed to drive any headphones to their full potential, Ferrum components deliver an exceptionally transparent soundstage, vast dynamic range, ultra-low distortion, and profound detail that reveals the true soul of music. At Dream Audio, we are proud to present this innovative brand that seamlessly blends technical precision with musical emotion.
Manufacturer information (GPSR)
Manufacturer
HEM Sp. z o.o.
Al. Jerozolimskie 475 05-800 Pruszków Poland
+48 22 823 72 38