This was a voice recorder "kit" purchased from the popular home electronics store Stereo Hut and modified via plans from Carrion. It has a power switch, a sample button, a play button, a knob for playback pitch/speed drop (i used a 10k pot..) and a trigger input with switch to deactivate the trigger while sampling. Lots of fun! dingey 2 bit sound quality which gets pretty freaky when pitched way down.. one time while jamming it even spoke out in my own voice things that i didnt say.. very interesting..