Korg Volca Keys Synthesizer

Korg Volca Keys — Polyphonic Analog Synthesizer With a 1974 Filter Heritage

The Korg Volca Keys is a 27-key polyphonic analog lead synthesizer built around the filter circuitry of the legendary miniKORG700S from 1974. Designed as the ideal first analog synth, it pairs a simple three-voice architecture with deep sound-shaping power in a compact, battery-powered chassis. From warm chord stabs to thick unison leads, this instrument delivers unmistakable Korg analog character in a unit small enough to slip into a backpack.

What Sets the Volca Keys Apart in the Volca Lineup

Unlike its monophonic siblings in the Volca series, the Keys adds genuine three-voice polyphony — a rarity at this price tier. Motion Sequence records knob movements in real time, while a built-in delay with tempo sync adds space and movement without external pedals.

Analog Voice Architecture — Three VCOs and a Vintage Filter

The signal path is fully analog: three voltage-controlled oscillators feeding a 12 dB/octave low-pass filter, a voltage-controlled amplifier, one LFO, and one envelope generator. Its filter circuit is descended from the miniKORG700S, with self-tuning circuitry keeping pitch stable across long sessions.

• Polyphony: 3 voices — enough for triadic chords, layered leads, or three independent sequencer parts
• Oscillators: 3 VCOs with Sawtooth and Square waves, plus Detune, Portamento, and Ring Modulation
• Filter descended from the 1974 miniKORG700S — 12 dB/octave low-pass with Cutoff, Peak, and EG intensity

LFO, Envelope, and the 16-Step Loop Sequencer

Modulation comes from a single LFO with Sawtooth, Triangle, and Square waveforms routable to pitch and filter cutoff. An integrated 16-step sequencer stores up to eight patterns and supports Motion Sequence, Active Step, and Flux for evolving arrangements.

• LFO: 1 oscillator with Rate, Pitch depth, Cutoff depth, and three waveforms
• Envelope: 1 EG — Attack, Decay/Release, Sustain
• Sequencer: 16 steps, 8 patterns with Motion Sequence, Active Step, and Flux

Sync, MIDI, and Battery Power for Any Setup

Sync In and Sync Out jacks (3.5 mm) lock the Volca Keys to other Volcas or any gear following standard analog sync voltage. A MIDI In connector accepts notes and MIDI Clock from a DAW, and every knob responds to incoming MIDI CC messages.

• Keys: 27 touch keys laid out chromatically — playable as a keyboard or step trigger
• Dimensions: 193 × 115 × 46 mm — fits in a gig bag pocket alongside other Volcas
• Weight: 377 g (excluding batteries) — light enough to hold one-handed during a performance
• Power: 6 × AA batteries for around 10 hours, or optional KA-350 AC adapter
• No pitch bend, aftertouch, or modulation wheel — keeps the interface deliberately simple

First-Time Analog Buyers, Beat Makers, and Live Performers

This synthesizer is the right choice for first-time analog synth buyers who want a real three-voice instrument without the complexity of a full-sized polysynth. Live performers benefit from battery operation, the built-in speaker, and the ability to stack three sequences at different pitches.

Korg's Half-Century of Analog Circuit Design

The Keys draws on Korg's half-century of analog know-how, with its filter section re-engineered from the miniKORG700S released in 1974. Launched as part of the original Volca trio alongside Volca Bass and Volca Beats, the Keys answered a long-standing demand for a polyphonic member of the compact series.