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The Ferrum HYPSOS is a standout linear/switching hybrid power supply that delivers clean, selectable voltage (5–30V) at up to 6A, making it a favorite for upgrading headphone amps and DACs. At £799, this used listing is a strong deal: it sits below the 25th percentile (£793) of recent GBP comps, with a median of £843, meaning you’re getting it for less than most sellers are asking.
This isn’t just cheap—it’s a smart buy because the HYPSOS is widely praised for tightening bass, improving dynamics, and reducing noise without the “switching” grit of cheaper PSUs. As Ferrum’s first product, it’s well-built, compact, and still highly relevant in 2026. If it’s in working order with the original foot kit and cable, this is a clear buying opportunity for anyone serious about power integrity.
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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