There's New Upgraded Version of Tube-Driven Pickup Valvebucker, Here's the Price and Some Details
Valvebucker for Guitar
Ruokangas Launches the Valvebucker Mk2, a $2,000 Active Pickup Powered by Vacuum Tube | GuitarPlayer
Ruokangas' Valvebucker Mk2 could be the most expensive pickup yet
NAMM 2019: Ruokangas Valvebucker - the first ever tube-driven guitar pickup? - gearnews.com
Press Release: The Ruokangas Valvebucker pickup – Kitarablogi.com – Finland's premier Guitar and Bass blog
Ruokangas unveils Valvebucker® - The first and only tube driven Electric Guitar Pickup in the World – MusicPlayers.com
Valvebucker - the audiophile pickup for electric guitar and bass
Ruokangas Valvebucker®, tube driven pickup... | The Gear Page
Ruokangas Guitars - Let us introduce to you the first ever Valvebucker powered VSOP guitar: https://ruokangas.com/guitar/vsop-classic-valvebucker-344-v/ Here in the talented hands of Mr. Fastfinger / Mika Tyyskä: https://www.youtube.com/watch?v ...
Valvebucker, the tube powered guitar pickup invented by Juha Ruokangas
Valvebucker, the tube powered guitar pickup invented by Juha Ruokangas
Inside the Audiophile Design of the Ruokangas Duke Valvebucker | GuitarPlayer