The Ekdahl Moisturizer

"The Ekdahl Moisturizer is a spring reverb where the springs are exposed so they can be played/hit/fiddled with. As well as being capable of creating sound in itself, you can of course also play sound through the springs like a regular spring reverb - this makes for happy-fun-time finger-modulation of the reverb on whatever audio that's going through it. On top of this there's an analog multimode filter that can be used to attenuate or exaggerate certain frequencies in the sound..." There is also an LFO and CV control. Be sure to see The Ekdahl Moisturizer site for tons more including samples.

Playing the springs of The Ekdahl Moisturizer

YouTube via elektrodwarf
"The Ekdahl Moisturizer having its springs played, mostly without any audio source connected."

Moisturizer feedback clean

"The Ekdahl Moisturizer feeding back through an amp, no audio source or other effects used. Sorry about the shitty quality of the sound, this does NOT show the full frequency range. Check out www.sdiy.org/knas for more shit."