A powerful bass synth with a sound
source based around a vacuum tube oscillator.
The acid bass machine with the pinnacle of modulation and
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
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
An acid bass machine for a new generation combines classic sound
with the power of modern synthesizer design. It's the volca nubass.
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
The Nutube is equipped with two vacuum tubes; one is used in the
oscillator to generate a sawtooth wave or square wave. The other
vacuum tube is used in the drive circuit of the sub oscillator,
adding depth and warmth one octave below the oscillator. This
oscillator and sub oscillator provide a circuit structure that
brings out the harmonic character that only a real vacuum tube could
A transistor ladder low-pass filter that produces a distinctive
The low-pass filter defines the sound of this bass machine; it uses
a transistor ladder design found on classic analog bass synths. This
filter is uniquely dynamic in the way it affects a sound more than
just ranging from bright-to-dark. Its wide range of timbral
possibilities makes it ideal for a broad variety of dance music; you
can use it to create the distinctive modulation that can be heard in
acid house, or increase the resonance to bring out a sharp character
that's appropriate for techno.
Analog driver circuit
nubass is equipped with overdrive that uses an analog circuit
reminiscent of a classic stompbox. Turning the knob toward the right
compresses the volume while causing mild distortion, adding
thickness to your bass sounds. The tone knob also lets you adjust
the crispness of the high-frequency range.
Volca sequencer makes performing and composing simple and intuitive
A 16-step sequencer that lets you automate parameters
The volca nubass is equipped with a full-fledged 16-step sequencer
with a variety of functionality; by using it in conjunction with a
rhythm machine, you can construct rhythm tracks or loop music.
You can use the 16 buttons for step input just like the rest of the
volca series, or play the buttons as a keyboard for realtime
recording. The chain function lets you play back multiple sequence
patterns in succession, allowing you to loop up to 16 sequences.
The motion sequence function can record knob movements, applying
parameter changes over time to the sound. This can be used when
creating loops, or for live performances that are dynamic and
original. Up to 16 sequence patterns together with motion sequences
can be saved in internal memory.
There's also an active step function that lets you skip steps that
you specify during playback; sequence patterns become more dynamic
and exciting when they can be edited in real time during
Three functions to create grooves on volca nubass
The sequencer of the volca nubass provides three functions that add
the slap and slide performance techniques that are distinctive of
acid bass: these transpose, accent, and slide functions are
accessible and controllable through the step sequencer.
Transpose is a function that plays a note one or two octaves higher;
it adds movement to the bass line while staying within the original
scale. Accent emphasizes a note, creating dynamics that make the
rhythm expressive. And the slide function that's indispensable to
acid sound creates a smooth transition to the next note. Use these
functions to add a sense of groove, and volca nubass will come alive
in your performances and compositions.
Randomize settings can be applied to each of these three functions.
In addition to generating unpredictable patterns, you can update the
randomize settings to keep varying the patterns, bringing out more
unexpected and exciting ideas from the sequencer.
Connectors that allow synchronized performance and external control
Since this unit provides a sync jack for easy connection to Korg
groove machines, you can connect it to another volca series unit or
to equipment such as an electribe or the SQ-1, and enjoy
synchronized playback with the sequencer. There's also a standard
MIDI IN connector, so you can use the volca drum as a sound module
for your DAW.
Compact, size, battery operation, and built-in speaker mean that you
can take this unit anywhere and enjoy playing on the go.
Free bundle of music software
The volca nubass comes with a diverse variety of music software from
Izotope including “Ozone Elements” which lets you not only create
songs but also master them using AI, “Skoove” which will help you
improve your keyboard playing skills, “Reason Lite” DAW software, as
well as software synths from KORG and other brands.
In other words, the moment you get your hands on this synthesizer
you'll have a variety of tools to help you take your music to the
Multi touch Keyboard / step key
Type Analog synthesis
Maximum Polyphony 1
Synthesizer Type Analog synthesis Maximum Polyphony 1 Structure VTO (oscillator,
sub-oscillator), VCF, VCA, EG, LFO, Overdrive
Number of parts 1
Number of Steps 16 (pattern chain is available)
Number of Recording Patterns 16 (No.1 – 10 are factory preset)
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
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)
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)