Ferrum OOR

Ferrum

OOR

Introduced 2021$1,995 MSRP

Fully balanced solid-state headphone amplifier from Polish maker Ferrum (HEM), designed to pair with the Hypsos hybrid power supply for higher rails.

MSRP

$1,995

Used market · Excellent

$1,200est.

-40% vs MSRP
as of Aug 15, 2026

MSRP to used market

From $1,995 at launch to $1,200 today (estimated).

Specifications

Type
solid-state headphone amplifier / preamp
Topology
fully balanced discrete; optional Hypsos hybrid PSU
Power output
approx. 8W into 60 ohms (balanced)

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