Ferrum OOR Amplifier + Hypsos Single-Output Power System BUNDLE (Open Box) folding-collapsible A flat cable that’s durable

A flat cable that’s durable and won’t tangle up in knots

It glows blue to indicate it is playing an MQA Studio file

handmade earphone bag

There would be a single dynamic driver only — of the highest quality

Optional Wired Connection

Ferrum OOR Amplifier + Hypsos Single-Output Power System BUNDLE (Open Box) folding-collapsible A flat cable that’s durableOOR, the only headphone amplifier with a soul OOR fully Balanced analogue headphone amplifier Proprietary discrete power amp technology Proprietary 4 pin Ferrum connector for HYPSOS Balanced 4 pin XLR and unbalanced RCA headphone outputs OOR will redefine the category of headphone amplifiers. OOR will drive any headphones effortlessly to the max of their potential, while preserving the essence of the music it amplifies. Ultra low distortion, zero