The volca nubass is the first analog synthesizer equipped with a new generation Nutube valve on its oscillator. More analog vacuum valve translates into warm, thick and rich sound. The familiar scaled filter offers the character of classic bass machines, along with overdrive and massive distortion. 16 step volca sequencer, Chain function to chain patterns, Motion Sequences recording, Active Step, Accent, Slide and Transpose functions with Randomize option for each function. Built-in speaker. Battery powered or via KA350 adapter options.