the Tremorama has all of the functions of the Seek-Trem plus it has an extra foot switch on the left that allows you to select random mode, which sounds a little bit like a bad guitar cord that is cutting in and out in time with the tremolo speed.

Tremorama is an eight-stage sequencer-controlled tremolo pedal. The controls are, from left to right, a 4/8/6 step selector switch, speed (tempo), and 8 sequencer volume controls.