Korg Volca Modular Micro Modular Synthesizer

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Korg Volca Series West Coast-Style Semi-Modular Analog Synthesizer

Korg Volca Modular is a semi-modular analog synthesizer that makes modular synthesis more accessible and understandable than ever before. Creating new sounds that don't exist in the outside world is an unending dream which has continued since the birth of electronic musical instruments. This dream has evolved and expanded throughout the development of new and unique music production devices. The popularity of modular synthesizers around the world has generated new excitement and interest in the so-called 'West Coast style' of synthesis that deviates from traditional synthesis norms. The compact body of this Volca synth features eight modules and 50 patch points. While learning the basics of a modular synth, you can use popular features of the Volca synthesizer line to control a unique and different flavor of analog sounds.

Eight modules
Volca Modular is a semi-modular synthesizer consisting of independent analog synth modules, digital effects and a sequencer. Each of the modules has been carefully selected for its standalone completeness. The modules are internally connected so that sound can be produced even before connecting the included pin cables, and the routing is shown by white lines on the panel. Module connections via a pin cable take priority over the internal connections, bypassing them.

  • Source: This consists of a triangle VCO carrier and a modulator. The complex overtones generated by FM modulation are sent through a wavefolder circuit to add additional overtones, producing a distinctive sound. This module is important in determining the basic character of the sound of Volca Modular.
  • Functions: This section consists of two function (envelope) generators. In addition to an ADH generator with attack, hold and release, there's a rise/fall generator, also known as a slope generator, which not only applies time-varying change to the sound but also lets you patch the end trigger out back into the trigger in as a loop, making it usable as a VCO or LFO.
  • Woggle: This is a random signal generator containing a sample and hold circuit that uses pink noise as its source. Two outputs are provided, allowing it to output either stepped or smooth random noise.
  • Split: This module distributes one input to two outputs. It can also be used in the reverse direction, combining two control or audio signals into one.
  • Dual LPG: This consists of two low pass gate circuits. Typical of the West Coast style of synthesis, the module packages a filter with an amp, allowing the brightness and volume of the sound to vary together.
  • Utility: This is a mixing/scaling module that combines two signals in various ways. It can mix not only audio signals but also control signals, as well as inverting or attenuating those signals.
  • Space Out: This is a stereo module that applies a reverb-like effect to the audio signal.
  • Sequence: This module is for connecting to the internal sequencer. You can set the tempo and select different rhythm divisions to output via the gate counter.

West Coast style in Volca format
Analog synthesizers in which a simple oscillator such as a saw wave or square wave is modified by a filter are referred to as 'East Coast style' because of their origin from well-known American manufacturers. Synths of this style, as exemplified by Korg MS-20, have continued to evolve toward a goal of being used in many mainstream musical genres, thus being equipped with a keyboard for performance. Their sounds are notable for sharp filters and rich presence and can be heard in many well-known songs.

Synthesizers of the 'West Coast style' evolved in a uniquely different direction from such musical developments. Pursuing the freedom that is inherent to electronic musical instruments, these were based on oscillators such as FM modulation which generated numerous overtones and used random and complex control signals and low pass gate circuits to vary tonal character and volume so that slight movement of a knob might dramatically transform the sound. While their potential was acknowledged, the resulting sound and its changes were difficult to predict, causing these synths to be used in a more experimental capacity.

For these reasons, hardware products of this style have been few in number. However, recent years have seen the popularity of modular synths such as eurorack, as well as plug-in virtual instruments that resurrect classic bygone synths of the past. This worldwide movement toward embracing interesting sounds has received renewed attention, spurring a new look at the sounds of this style.

Starting from analog and freely taking in all elements including FM and PCM, the Volca series has also focused on this trend. And now, this distinctive 'West Coast style' sound has been added to the Korg Volca series.

Patching allows infinite possibilities
Volca Modular's modules are connected via the included pin cables, allowing a diverse range of combinations. The unit's compact chassis provides 50 patch points. Inputs and outputs are color-coded for recognition at a glance and the signals are also marked by symbols to indicate audio, control, gate or trigger. Normally, each signal is connected according to its use, but on Volca Modular signal levels are universally compatible among modules, allowing hidden possibilities to arise from patching that defies common sense. Twenty pin cables are included along with a reference sheet explaining each patch point and providing basic examples of patching.

Step sequencer that can automate parameters
Volca Modular is equipped with a full-fledged 16-step sequencer that provides a wide range of functions, letting you enjoy automatic performance even when used standalone. Using the 16 buttons familiar from the Volca series, you can perform step input or use the buttons as a keyboard for realtime recording. The pattern chaining function plays back multiple sequence patterns in succession, allowing you to connect up to 16 sequences with up to 32, 64 or even 256 steps to create large-scale development.

The motion sequence function records knob movements, letting you add time-varying change to the sound. You can create loops or use this function live for strikingly original performances. Up to 16 sequence patterns and sounds can be saved in the unit. Also provided is an Active Step function that lets you play back a sequence while skipping the steps you deactivate. You can skip the latter half to produce a short loop, use an alternate time signature to create polyrhythms and evolve sequence patterns in real time to create a dynamic performance.

Randomize function that can generate accidental ideas
The sequencer of Volca Modular lets you specify randomization for notes, active steps and microtuning. Irregular phrases, rhythms and scaling that would be unlikely to come to mind can be generated by applying randomness, letting Volca Modular be a source of unknown ideas.

Two new modes added for sequence playback
Two new sequence modes have been added: bounce sequence mode, which makes a round trip through the steps, and stochastic sequence mode, which gradually proceeds while randomly moving forward and backward. Playing back a recorded sequence in a different form can add dramatic changes to your song or performance.

Musically advanced scales, keys and micro tuning
Although Volca Modular is a West Coast style synthesizer, it also provides flexible support for music as a contemporary instrument. You can choose from 14 types of scale including equal temperament. Since you can also specify the tonic key from which these scales start, you can play these scales in any key.

There's also a microtuning function that lets you individually specify the pitch of each note. You can pursue your own unique music by performing in an original tuning with the pitch of individual notes raised or lowered.

Excellent playability
With a sync jack that allows easy connection to a Korg groove machine, you can connect Volca Modular to another Volca series unit, a Minilogue, Monologue or Prologue, an Electribe or SQ-1 and enjoy sessions with the sequencer synchronized to the playback.

The CV IN jack for external control is a TRS mini stereo jack that lets you input two signals. The left channel can input a ±5V signal and the right channel can input a signal of 1V/oct (0–+6V) signal that is internally converted to pitch CV within Volca Modular. Of course, each of these two signals can also be patched to control a module.

Enjoy anywhere
Compact, size, battery operation and a built-in speaker mean that you can take this unit anywhere and enjoy playing at any time.

More Information
Manufacturer Korg
Condition New
Analog/Digital Analog
Programs/Presets 8
Voices of Polyphony 3
Effects Space Out Reverb Effect
Sequencer 16 Steps
Arpeggiator No
Audio Outputs 1/8" Audio Out
Control Connections 50 Patch Points
Volca Sync Jack
1/8" CV in
Width 7.61"
Depth 4.54"
Height 1.54"
Product Weight 0.83 lbs (Excluding batteries)

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