Ferrum Audio OOR – Fully Balanced Analogue Headphone Amplifier The Ferrum Audio OOR is a fully balanced headphone amplifier that combines analogue purity with cutting-edge amplifier technology. Born from an in-depth exploration of pure analogue sound, it delivers ultra-low distortion, immense dynamics, and exceptional detail, all while preserving the essence of the music. Its proprietary discrete amplifier architecture ensures every note is transmitted with precision, control, and power. Whether reproducing subtle nuances or dynamic peaks, the OOR effortlessly drives any headphones to their full potential. Operation is simple and intuitive, with just three front-panel knobs controlling the most important settings without compromising sound quality. A standout feature is the Ferrum Power Link (FPL), which allows the OOR to pair perfectly with the HYPSOS Hybrid Power System. This connection enhances transient response, impulse control, and overall performance, revealing unheard levels of musicality with transparency, detail, and natural timbre. Crafted in Poland by Ferrum’s skilled engineering and design team, the OOR blends understated elegance with audiophile-grade performance, making it a reference-class instrument for headphone enthusiasts. Key Features Fully balanced analogue signal path for maximum transparency Proprietary discrete amplifier technology Balanced 4-pin XLR and unbalanced RCA headphone outputs Ferrum Power Link for optimal synergy with HYPSOS Intuitive front-panel operation with three knobs Ultra-low distortion and wide dynamic range Specifications Frequency Response: 20 Hz – 100 kHz ±0.1 dB Output Power (Balanced): 1.6 W into 300 Ω, 8 W into 60 Ω Output Power (Single-ended): 400 mW into 300 Ω, 2 W into 60 Ω THD (Balanced): 0.00011 % / -119 dB (1 mW into 50 Ω) Dynamic Range: 130 dB (A-weighted) Dimensions (W x D x H): 21.7 x 20.6 x 5 cm Weight: 1.8 kg In the box 1x Ferrum OOR headphone amplifier 1x power cord 1x AC/DC power adapter
