Summer NAMM '14 - Rocktron Widowmaker, ValveSonic, and Velocity 100LTD Demos Tessa JeffersAugust 7, 2014VideoThe GHS-owned company releases three new rackmountable amps.whats-newsnamm-2014rackmountvideospreampgear-show-demorocktronampssolid-stategearGearAmpsVideosNAMMReviews