NAMM '18 - Bartel Amplifiers Roseland Demo Ted DrozdowskiFebruary 4, 2018VideoFormer Tone King designer Mark Bartel makes his NAMM debut with a luscious, JTM-inspired combo.whats-newnamm-2018videosbartel-amplifiersgear-show-demotube-combogearspecial-featured-storiesampsreverb6l6GearAmpsVideosNAMMReviews