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it is the only model in the Classic series to use a sealed (non-ported) enclosure — a design choice that produces controlled
Bluetooth aptX HD enables two-way high-quality wireless transmission to and from headphones and portable devices
900 W / 2 ohms
larger rear chamber from the Core monitor series
Ferrum OOR Headphone Amplifier with AC/DC Power Supply Option:OOR it is the only modelFerrum OOR Headphone Amplifier with AC DC Power Supply at Vinyl Sound Buffalo, New York The Ferrum OOR is a fully balanced, fully discrete analogue headphone amplifier from Ferrum Audio (Warsaw, Poland), available with its AC DC power supply at Vinyl Sound in Buffalo, New York. The OOR is the winner of the EISA Best Headphone Amplifier 2022 2023 Award and the Headfonia Best Amplifier 2024 Readers' Choice Award, recognised for a proprietary discrete