Korg NAUTILUS 73

Essential Information About the Korg NAUTILUS Synthesizer

• Ultra-complete workstation with 9 sound engines covering piano, organ, analog modeling, FM, physical modeling, and more
• 7-inch TouchView touchscreen (800 x 480) and fast workflow with sound search and Set List mode designed for live performance
• Integrated production: 16-track MIDI sequencer + 16-track audio recorder, sampling and resampling
• Advanced sound design: 16 effect processors, real-time (RT) controls, and intuitive parameter editing

A Korg Workstation Focused on Expressiveness and Sonic Depth

The Korg NAUTILUS pushes the concept of a modern workstation by combining multi-engine synthesis power, extensive sample content, and integrated production tools. Its philosophy is clear: to provide access to a massive sonic palette while maintaining a smooth interface to quickly move from idea to finished track, both in the studio and on stage.

Who Is the Korg NAUTILUS For?

The NAUTILUS is suitable for advanced to expert keyboardists seeking an "all-in-one" instrument: pop, rock, electro, techno, ambient, funk, gospel, synthwave, film scoring, or sound design. It excels in live performance thanks to the Set List mode and immediate controls, and becomes a true home studio production hub with its sequencer, multitrack audio recording, and open sampling system.

Features and Innovations

At the heart of the NAUTILUS are nine dedicated sound engines, usable alone or combined in Programs/Combinations to create layers, splits, and evolving textures. The piano engine SGX-2 emphasizes expressiveness (multiple velocity layers, resonances), while EP-1 targets iconic electric pianos and CX-3 captures the character of tonewheel organs. For synthesis, MOD-7 (VPM/FM), MS-20EX and PolysixEX (analog modeling), as well as STR-1 (physical modeling) offer a wide sound design playground. The 6 RT buttons directly control filters, effects, gate, tempo, and other parameters, with a lock function to secure performance. The arpeggiator and drum track provide 4 scenes per sound for improvisation and enrichment. Sampling and resampling are streamlined, supporting common formats and SSD storage. Finally, the production section combines 16 MIDI tracks and 16 audio tracks, supported by 16 internal effects (12 insert, 2 master, 2 total) and an EQ per part for mixing directly on the machine.

Technical Specifications

Sound Engines and Content

• 9 dedicated sound engines (pianos, electric pianos, organs, FM/VPM, analog modeling, physical modeling, etc.)
• Sound categories: "unique," "current," "standard"

Display and Interface

• 7-inch color TouchView touchscreen
• Resolution: 800 x 480 pixels
• Sound search function with preview
• Set List mode: 16 color-coded touch slots + 9-band graphic equalizer
• Controls: 6 RT (real-time) buttons with lock function

Sequencer and Recording

• Sequencer: 16 MIDI tracks
• Recorder: 16 audio tracks
• Simultaneous recording: up to 4 tracks
• Resolution: 16-bit / 24-bit
• Sampling rate: 48 kHz

Effects

• 16 internal effects
• 12 insert effects
• 2 master effects
• 2 total effects
• 3-band EQ per sound, sequencer track, and audio track

Sampling and Storage

• Korg open sampling system: external source sampling and internal resampling
• Import formats: AIFF, WAV, SoundFont 2.0, AKAI S1000/3000
• Storage: 60 GB SSD (2.5-inch)

Keyboard (depending on version)

• 88-key version: RH-3 mechanical (weighted hammer action, heavier bass / lighter treble)
• 61 and 73-key versions: light semi-weighted action

Audio Connections

• Outputs: L/MONO, R, Individual 1-4
• Output connectors: 1/4-inch TRS balanced
• Output impedance: 350 ohms (stereo); 175 ohms (mono, L/MONO only)
• Nominal level: +4.0 dBu
• Maximum level: +16.0 dBu (with impedance of 600 ohms or higher)
• MAIN VOLUME slider controls only the main audio outputs L/MONO and R
• Headphones: 1/4-inch stereo jack
• Headphone output impedance: 33 ohms
• Maximum headphone power: 60+60 mW (at 33 ohms)
• MAIN VOLUME knob is linked to the main audio output
• Audio inputs 1 and 2: 1/4-inch TRS balanced
• Input impedance: 10 kohms
• Nominal level (LINE): +4 dBu
• Maximum level (LINE): +16 dBu
• Nominal level (MIC): -22 dBu
• Maximum level (MIC): -10 dBu
• Source impedance: 600 ohms

MIDI, USB, and Controls

• MIDI: In, Out, Thru
• Control inputs: sustain pedal (half-pedal supported), assignable controller, assignable pedal
• USB A (Type A): external USB devices (QWERTY keyboards, MIDI controllers, Ethernet adapters, storage)
• USB B (Type B): MIDI/audio interface
• USB audio (USB B): 24-bit, 48 kHz, 2 channels (digital output of the same signals as main audio outputs L/MONO and R)
• USB MIDI (USB B): 1 input (16 channels) / 1 output (16 channels)
• USB audio (USB B): 2 input channels / 2 output channels
• 2 high-speed USB ports (up to 480 Mbps)

Dimensions and Weight (depending on version)

• Dimensions (W x D x H) 88 keys: 1,437 x 387 x 139 mm
• Dimensions (W x D x H) 73 keys: 1,227 x 386 x 116 mm
• Dimensions (W x D x H) 61 keys: 1,062 x 386 x 116 mm
• Weight 88 keys: 23.1 kg
• Weight 73 keys: 14.6 kg
• Weight 61 keys: 13.0 kg