A powerful bass synth with a sound source based around a vacuum tube oscillator. 
The acid bass machine with the pinnacle of modulation and distortion.

Even today, when digital technology allows electronic musical instruments to simulate any sound imaginable, people seek the warm harmonics and distortion produced by analog vacuum tubes. This distinctive sound has a quality beyond words that sets it apart, and cannot be captured by a response curve; it's the unmistakable sound of tubes. 

The volca nubass is the first analog synth to be equipped with a Nutube new-generation vacuum tube in its oscillator. Vacuum tube plus analog means that the sound is warm, thick, and rich. The familiar transistor ladder filter gives it the character of a classic bass machine, along with overdrive, and huge-sounding distortion. 

An acid bass machine for a new generation combines classic sound with the power of modern synthesizer design. It's the volca nubass.

Keyboard Multi touch Keyboard / step key Synthesizer Type Analog synthesis Maximum Polyphony 1 Structure VTO (oscillator, sub-oscillator), VCF, VCA, EG, LFO, Overdrive Sequencer Number of parts 1 Number of Steps 16 (pattern chain is available) Number of Recording Patterns 16 (No.1 – 10 are factory preset) Connectors Audio Output Headphones (3.5mm stereo mini jack) Sync Sync In (3.5mm monaural mini jack, Maximum input level: 20V), Sync Out (3.5mm monaural mini jack, Maximum Output level: 5V) MIDI MIDI In Power Battery Life Approximately 8 hours (using alkaline batteries) Power supply AA alkaline battery ×6, AA nickel-metal hydride battery ×6, or AC adapter “KA-350” (optional) Others Included Items Six AA alkaline batteries for checking operation, Sync cable Accessories (sold separately) KA-350 AC adapter, SEQUENZ CB-4VOLCA hard shell case, SEQUENZ CC-VOLCA dedicated carrying case, SQ-CABLE-6 sync cable Dimensions (W x D x H) 193 × 115 × 46 mm / 7.61" x 4.54" x 1.82" Weight 370 g / 0.82 lbs. (Excluding batteries)