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Ferrum Audio Oor/Hypsos Combo Headphone Amplifier I can’t rave about these enough. The Ferrum Oor is a stellar desktop sized unit, natural, spacious, detailed and punchy. Tuning is very neutral, but the extra power really does give you the next level dynamics and impact required, and sets it apart for critical listening. I had these in my mastering studio as a reference tool, but have moved to Kii Threes and can’t really justify keeping 2 of these stacks at home. Condition: Excellent Payment Method: EFT, Cash, Paypal Region/State: (VIC) Victoria/Australia By BDH3820 0 Comments AUD $3,500 Dat
This Ferrum Audio OOR HYPSOS stack is a rare, fully balanced Class-A/B powerhouse that declares war on most TOTL amplifiers with 8W into 60Ω, making the A$3,500 listing a strong deal against the typical used market. While the original combo RRP sits at A$5,900 and standalone used OOR units often trade near A$1,950, finding the full HYPSOS-powered stack under A$3,500 is well below the median for this complete setup, especially given the current A$3,599 new price for the OOR alone.
The OOR earns its reputation for driving virtually any headphone with its discrete, high-current design, while the HYPSOS power supply eliminates the stock Meanwell unit’s noise for a cleaner, more refined sound. This combination offers meaningful upside as an older but still top-tier option that rivals newer A$2,800–A$3,200 competitors, and an “excellent” condition listing at this price represents a genuine buying opportunity for enthusiasts seeking TOTL performance without the top-tier cost.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Ferrum Audio emerged from Poland's Warsaw region as a fresh entrant in the audiophile world, launched by parent company HEM under CEO Marcin Hamerla. Drawing inspiration from local ironworking heritage—where "Ferrum" means iron in Latin and nods to the area's metallurgic past and Hamerla's blacksmith father—the brand embodies Polish craftsmanship fused with high-end audio design. Locally engineered and manufactured, it represents years of accumulated expertise without a specific founding year disclosed, quickly gaining traction since its debut products.
The lineup centers on compact, high-performance desktop and head-fi electronics, spotlighting the HYPSOS power supply as its firstborn, followed by the OOR headphone amplifier, ERCO DAC/amp, and WANDLA DAC. These siblings excel standalone but pair synergistically, especially with HYPSOS, delivering exceptional musicality. Ferrum avoids speakers, turntables, or cables, focusing instead on DACs, amplifiers, and power solutions tailored for headphones and living-room setups.
Positioned as a niche boutique force in the high-end market, Ferrum has surprised the head-fi scene with its iron-clad builds, precise sonics, and value, conquering global dealers from its Polish roots. For discerning buyers seeking uncolored, dynamic audio without excess bulk, it stands as a confident, modern contender.
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