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. Features   The fusion of a newly developed vacuum tube oscillator with a classic ladder filter A vacuum tube oscillator circuit forms the heart of volca nubass, utilizing groundbreaking Nutube technology A transistor ladder low-pass filter that produces a distinctive sound Analog driver circuit Volca sequencer makes performing and composing simple and intuitive A 16-step sequencer that lets you automate parameters Three functions to create grooves on volca nubass Excellent playability Connectors that allow synchronized performance and external control Enjoy anywhere Specifications   KeyboardMulti touch Keyboard / step key Synthesizer Type: Analog synthesisMaximum Polyphony: 1Structure: VTO (oscillator, sub-oscillator), VCF, VCA, EG, LFO, Overdrive SequencerNumber of parts: 1Number of Steps: 16 (pattern chain is available) Number of Recording Patterns: 16 (No.1 – 10 are factory preset) ConnectorsAudio 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 PowerBattery 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) Watch: KORG Volca Nubass - Delivering huge bass via a real vacuum tube