made for any kind of audio sensitive venue (due 2 the volume knob) ..
(=appr. 15dB up to 80dB if necessary)
I created this show for several practical reasons; the main one is that I often was asked to perform at indoor places with my bulb horn show, while this can give an annoying loud feedback effect; but not with the push knobs ..! They can also give a sort of gong-sustain effect, which is again absent on the horns. The videos are with push bells (one tone only), the others with a red overall come with the genuine push knobs (with a choice between 100 different tones). I also can practise at home now with these knobs..