Check the listing for details. KORG volca keys Analog Synth Machine. Color: Black, Condition: New. Listed at 149.99 USD. Following in the footsteps of the monotron, monotribe and MS-20 mini analog synthesizers, KORG announces the volca series. volca is a new lineup of EDM production tools. These powerful and fun-to-use true-analog devices deliver a diverse array of fat sounds that can be obtained only from an analog synthesizer. Each is also equipped with sequencing/recording capabilities for intuitively generating performances. Multiple volcas can be used in tandem via the vintage-style sync in/out, and with your favorite DAW software or MIDI keyboard via MIDI In. Battery operation and built-in speakers mean that you can conveniently play anywhere and anytime. These are the next-generation analog synthesizers, bringing you the ultimate sounds and grooves with ease and depth.