NAMM '16 - Bogner Goldfinger 54 Phi Demo Jason ShadrickFebruary 15, 2016VideoCheck out Reinhold Bogner's new head that can switch between 6L6 and 6V6 power tubes.whats-newvideostube-head6v6namm-2016gear-show-demobognergearspecial-featured-storiesamps6l6GearAmpsVideosNAMMReviews