This is the best new thing to come along in some time. It shakes your back and gives you the experience of big bass amps without the noise. Perfect for enhancing your In-Ear monitoring experience and equally great for lowering your stage volume when not playing with IE monitors. Get one quickly and enjoy! This might very well be the last batch with the pictured Softcase included in the deal... And this is version two that has more power in the shaker, the aux-input runs to the shaker too and even notes higher up the neck do now shake.