Korg Volca Nubass Vacuum Tube Bass Synthesizer

The volca nubass breaks new ground as the first analogue synthesiser to feature a Nutube new-generation vacuum tube in its oscillator circuit, bringing the unmistakable warmth and harmonic richness that digital technology simply cannot replicate. This innovative bass machine combines the distinctive character of vacuum tube technology with classic analogue circuitry, utilising two Nutube vacuum tubes - one generating sawtooth and square waves in the main oscillator, while the other drives the sub oscillator to add depth and warmth one octave below. The result is a sound that's thick, rich and authentically analogue, with harmonic characteristics that only real vacuum tubes can provide.

The transistor ladder low-pass filter forms the sonic backbone of this bass machine, using the same design philosophy found in classic analogue bass synthesisers. This filter offers dynamic timbral possibilities that extend far beyond simple bright-to-dark adjustments, making it perfect for dance music production from acid house modulation to sharp techno characteristics. The analogue overdrive circuit, reminiscent of classic stompbox designs, adds compression and mild distortion for extra thickness, while the tone control adjusts high-frequency crispness.

A comprehensive 16-step sequencer provides extensive functionality for rhythm track construction and loop music creation. You can input sequences using the 16 buttons or play them as a keyboard for real-time recording, with the chain function allowing up to 16 sequences to play in succession. The motion sequence function records knob movements for parameter automation, while the active step function lets you skip specified steps during playback, creating dynamic real-time performance possibilities with up to 16 patterns stored in internal memory.