Home Welcome to Formyx Amplifiers! Custom-made tube amplifiers and restoration services. We are located in Vaxholm, Stockholm in Sweden. Feel free to navigate through the links above or enter a keyword in the Search box. For demos, orders and other info feel free to contact us here! Share this:Click to email this to a friend (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Skype (Opens in new window)