Rockett JRAD Josh Smith Dual Tremolo The Josh Smith Dual Trem is a collaborative effort between Josh, Rockett Pedals and Tim Jauernig. This new Dual Trem is the brainchild of a working musician and, with that in mind, its simplicity is what makes this pedal a great tool. The JSDT was designed to achieve the old school sounds of some of the early Leo amps. It is a very musical and functional piece of equipment. You can dial in two identical trems but with one set fast and one set slow. Or you can vary the intensity so that the tremolo effect can pop in certain sections of a song, then you simply toggle back and forth! It is very versatile but, more importantly, very inspiring to play!