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KORG phase8 8-Voice Acoustic Synthesizer

Sound doesn’t just come from circuits with the KORG phase8—it’s born from motion, touch and resonance. This eight-voice acoustic synthesizer introduces KORG’s latest Acoustic Synthesis technology, combining physically vibrating steel resonators with precise electronic control to create sound that responds organically to both performance and environment. Featuring eight independent electromechanical voices, swappable and tunable resonators, envelope shaping, polymetric sequencing, pitch-dependent modulation and real-time haptic interaction, phase8 moves beyond traditional analog or digital synthesis. The result is a deeply expressive instrument that bridges physical acoustics and electronic control, designed for musicians and sound designers seeking tactile, evolving sound that feels alive under the hands.
Haptic Acoustic Synthesis With Eight Electromechanical Voices
At the core of phase8 are eight independent electromechanical voices, each built around a physically vibrating steel resonator. Unlike traditional analog or digital oscillators, these resonators generate sound through real-world vibration, which is then captured and shaped electronically for precise control. The result is a rich, organic tone that responds dynamically to envelopes, modulation, velocity and even acoustic feedback, producing textures that feel natural, unpredictable and deeply musical.
Swappable and Tunable Steel Resonators for Custom Scales
phase8 includes 13 chromatically tuned steel resonators, allowing you to install any eight at a time to define the instrument’s scale and character. Resonators can be easily swapped and fine-tuned, making it possible to explore alternate tunings, microtonal layouts or custom harmonic structures. Combined with envelope control that ranges from sharp, percussive attacks to long, sustained tones, this design makes phase8 as much a physical sound instrument as it is a synthesizer.
Polymetric Sequencing With Modulation and Automation
An intuitive polymetric sequencer brings movement and structure to phase8’s organic sound engine. Each voice supports step programming, live unquantized recording and step skip for complex rhythmic interplay, with sequences saved across eight memory slots. Three amplitude modulation modes—tremolo and two pitch-dependent audio-rate effects—add motion and harmonic complexity, while trigger delay and full parameter automation enable evolving patterns that shift over time.
Designed for Hands-On, Real-Time Interaction
phase8 encourages direct physical engagement in ways few electronic instruments do. Resonators can be touched, plucked, strummed or tapped by hand, and even interacted with using found objects to introduce new textures. The AIR slider controls how much acoustic sound bleeds through the pickups, opening the instrument up for more ambient, resonant behavior or tightening it for controlled, sequenced performance. Per-resonator velocity and envelope controls further shape how energy and time interact in every sound.
Flexible Connectivity for Modern Creative Setups
Despite its deeply physical sound engine, phase8 integrates cleanly into modern electronic workflows. MIDI, USB-MIDI, CV and Sync connections allow external devices to trigger notes, automate parameters and synchronize tempo, while the built-in sequencer can also drive external MIDI instruments. With line-level and headphone outputs, compact dimensions and thoughtful connectivity, KORG's phase8 offers a distinctive approach to sound where physical resonance and electronic control converge.



- Acoustic synthesizer delivers tactile, evolving sound shaped by touch and control
- Eight electromechanical voices with steel resonators create true acoustic vibration
- Swapable and tunable resonators let you customize scale and timbre instantly
- Envelope shaping transforms percussive hits into sustained tones for dynamic control
- Polymetric rhythm sequencer supports step and live recording for complex grooves
- Three amplitude modulation modes add tremolo and pitch-dependent textures
- Trigger delay shifts note timing for experimental rhythmic phrasing
- Full parameter automation records all panel moves for evolving sequences
- Physical interaction allows tapping, plucking and strumming for hands-on sound design
- MIDI, USB-MIDI and CV support seamless DAW and modular integration
- AIR slider boosts or reduces acoustic response for tailored performance feedback
- Product type: Acoustic synthesizer
- Model: phase8
- Synthesis type: Acoustic synthesis with electromechanical resonators
- Polyphony: 8 voices
- Resonators: Steel resonators swappable and tunable
- Included resonators: 13 chromatically tuned resonators with 8 installed
- Sequencer type: Polymetric rhythm sequencer
- Recording modes: Step programming and unquantized live recording
- Per voice functions: Step skip for polymetric sequencing
- Memory slots: 8 programs
- Parameter automation: Yes for all panel controls
- Modulation types: Tremolo AM pitch envelope and AM polyphonic modulation
- Modulation controls: Depth and rate
- Harmonic quantization: Optional for polyphonic modulation
- Envelope control: Per resonator envelope shaping for attack, decay, sustain and release
- Velocity control: Per resonator velocity intensity control
- Trigger delay: Tempo synced trigger delay via shift control
- Air control: AIR slider for acoustic response and physical interaction level
- Real time interaction: Touch, pluck, strum, tap and object interaction
- MIDI: MIDI TRS A input and output
- USB: USB C for USB MIDI and firmware updates
- Sync: Sync input and output
- CV: CV input plus or minus 5V
- Audio output: 1/4" line output
- Headphone output: 3.5 mm headphone output
- External control: MIDI USB MIDI and CV control of parameters
- External sequencing: External MIDI note triggering and MIDI output from sequencer
- Tempo sync: MIDI USB MIDI and sync input
- Power supply: DC 12V AC adapter
- Power consumption: 4.8W
- Unit dimensions: 9.09" × 9.31" × 1.81"
- Unit weight: 3.77 lb.
- Accessories: AC adapter, hex key, quick start guide, precautions sheet and five additional resonators
All Korg products purchased from a Korg USA authorized dealer are warranted to be free from defects in material and workmanship to the original consumer purchaser as listed below:
Labor: 1 Year
Parts: 1 Year
Exceptions: Tubes, AC Adapters, Foot Switches: 90 days
Warranty Requirements and Limitations:
-Proof of Warranty - The customer must provide proof of purchase in order to obtain warranty service. The dated sales slip or copy thereof is the only acceptable proof of purchase.
-The product must be purchased from a Korg USA authorized dealer and have a valid serial number.
Damage resulting from the following causes are excluded from the warranty set forth above:
-Misuse, including damage occurring during shipment, damage caused by battery leakage, accident, fire, unauthorized repairs, tampering, cosmetic damage or other types of damage which are the result of improper handling or abuse.
-The cleaning of controls or contacts due to exposure to dirty, dusty, or otherwise contaminated environment.
-Damage resulting from modification.
-Damage to units used for loan or rental.
Register online and extend your warranty!
Register your new Korg keyboard, keyboard rack module or digital piano online and receive a certificate that extends the product warranty for an extra year from the date of purchase.
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