Spinning Magnetic String Resonator for steel stringed instruments. A collaboration with Evicshen.

B-stock units have small surface imperfections from the manufacturing process but work and feel just like a non b-stock unit.

$180 + shipping & import tax depending on your country.

-We Ship Worldwide: To select worldwide shipping please change the country on the checkout page.

FERROUS ships with a USB-C rechargeable 9v battery and cable.

**Please note: some 9v rechargeable (and non-rechargeable) batteries are too weak to power Ferrous and can cause low power issues. Please read the Specifications section.