Joyo Jf-325 Tremolo PedalThe MoloTrem is a Tremolo that utilizes a photoelectric circuit, it sounds just like one of the tremolos you could find in vintage tube amps. It is flexible yet easy to use. A simple three knob control allows for adjustment of Rate (Speed), Depth (how much does the volume fluctuate) and Wave. The Wave knob is very cool because you can change it from a subtle triangle wave to a drastic square wave. This way you can achieve the classic tremolo sounds we