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HVT tested the OOR headphone amp

Posted by Duncan on April 21, 2022 | Featured

NA DE REVOLUTIE GAAT DE ZON PAS ECHT SCHIJNEN

Read the Dutch review – The secret of the ears about OOR Headphone amp and link to Hypsos

Join the revolution

Ferrum is a new brand proudly made in Poland by parent company HEM. HYPSOS is our firstborn, OOR our second and ERCO our third. These three siblings perform like nothing else right out of the box. Marry HYPSOS to one of the other two will unleash musical bliss.