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Korg Nautilus 73 Music Workstation
Korg Nautilus 73 Music Workstation - Image 2
Korg Nautilus 73 Music Workstation - Image 3

Korg Nautilus 73 Music Workstation

(1 customer review)
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$1,539.99

Estimated delivery on 17 August - 28 September, 2025
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Items Included

  • Korg Nautilus 73 Music Workstation
  • Power Cord
Key Features
  • 73-Key, Natural Touch Semi-Weighted
  • 9 Sound Engines + Updated SGX2 & HD1
  • TouchView Interface and Control Panel
  • Sampling and HD Audio Recording
  • Dynamic Polyphony Allocation
  • 16 Simultaneous FX + 32 EQs
  • 2200 Programs and Combinations
  • 16 MIDI +16 Audio-Track Sequencer (SSD)
  • Customizable Set List Mode
  • Color TouchView Display with Touch-Drag

The Korg Nautilus is a professional music workstation with a vast palette of sounds, integrated editing, detailed 7″ TouchView display with gesture support, 16-track sequencer, 16-track audio recorder, and extensive sampling capabilities. The Nautilus includes Essential and Future sound sets for a total of 2200 programs and combinations. The instrument features nine distinct sound engines, with each engine dedicated to authentically reproducing its respective instrument type, including detailed pianos, vintage keyboard sounds, tone-wheel organs, ethnic instruments, plucked instruments, analog synthesizers, and more.

The sequencer can access any combination of sound engines and imported samples, and the 16-track audio recorder can be used for recording vocals, other instruments, and more. The sound architecture offers a two-part split along with a single drum track in a single program, which when combined with the 16-part combination mode, makes for a massive sound and sequencing power house. The Dynamic Polyphony Allocation and Smooth Sound Transition provides uninterrupted playing and sound switching.

The Nautilus’s sampling engine allows you to record your own samples from external sources including sampling through effects or loading samples from the media mode. Once your samples are recorded or imported, edit start and stop points, set loop points, truncate, time-slice, and more. Create and edit multi-samples, which consist of one or more samples spread out across the keyboard and quickly convert them into programs. Create massive sounds using the generous internal RAM with up to 6 hours of sample time, and save your work into user sample banks and virtual memory.

The Nautilus is equipped with over 197 different effects types and can use up to 16 simultaneous effects and 32 simultaneous EQs for massive production power. You’ll have plenty of hands-on control thanks to the streamlined TouchView interface and control panel with customizable mode buttons. The Nautilus delivers professional sound quality and capabilities in an affordable, streamlined performance synthesizer.

Nine Synthesis Engines
The Nautilus features nine completely different synthesis engines: 

  • Three types of keyboard sound generators: SGX-2 (acoustic piano), EP-1 (electric piano), CX-3 (tonewheel organ)
  • Three types of virtual analog synthesizer sound generators: AL-1, MS-20EX, PolysixEX
  • PCM synthesizer sound generator with advanced functionality: HD-1
  • Physical modeling synthesizer for string hammering/plucking sounds: STR-1
  • VPM/FM synthesizer sound generator with advanced functionality: MOD-7

Each synthesis engine has enough functionality to operate as a standalone synthesizer

Optimized for Live Performance
Set Lists provide easy on-screen selection of Programs, Combinations, and Songs from a single screen. Smooth Sound Transitions (SST) provide overlapping effects and voices when you change sounds, with no special mode necessary
Effects
The Nautilus comes with 197 types of professional-grade effects that offer a stunning range of freedom, including chorus, delay, reverb, amp models, vocoders, and more
Arpeggiator
To support your playing and songwriting, there’s an arpeggiator that can automatically generate rhythmical or broken chords (arpeggios), a drum track for quickly playing drum patterns in a variety of styles, and a step sequencer that lets you intuitively create and play back original drum patterns
Sampling
Audio signals coming through the analog inputs can be sampled in stereo. You can also add the built-in effects when sampling, or even resample the programs or combinations. The Nautilus can also import sound files in various formats
Audio and MIDI Sequencer
The sequencer provides 16 MIDI tracks and 16 audio tracks (24-bit, 48 kHz) for composing and producing your own music. You can import and export SMF and WAVE files when working with other platforms
USB Functionality
The Nautilus can connect to your computer with a single cable, as it features a USB Type-B port that supports USB 2.0 for transmitting and receiving MIDI and audio data. The Nautilus features a USB Type-A port for easy connection to an external storage device
Category:
System
Nautilus System Version 1.0
Keyboard
73-Key, Natural Touch Semi-Weighted
Synthesis Method
HD-1 High Definition Synthesizer (PCM) HD-1
AL-1 Analog Synthesizer (Analog Modeling) EXi (Expansion Instruments)
CX-3 Tonewheel Organ (Tonewheel Organ Modeling)
STR-1 Plucked String (Physical Modeling)
MS-20EX Component Modeling Technology (Analog Modeling)
PolysixEX Component Modeling Technology (Analog Modeling)
MOD-7 Waveshaping VPM Synthesizer (VPM Synthesis)
SGX-2 Premium Piano (Acoustic Piano)
EP-1 MDS Electric Piano (Electric Piano)
Polyphony
HD-1: 140 Voices
AL-1: 80 Voices
CX-3: 200 Voices
STR-1: 40 Voices
MS-20EX: 40 Voices
PolysixEX: 180 Voices
MOD-7: 52 Voices
SGX-2: 100 Voices
EP-1: 104 Voices
Preset PCM Memory
Preset PCM 314 MB (ROM 1505 Multi-Samples, 1388 Drum-Samples)

Built-In Expansion PCM Libraries
EXs1 ROM Expansion
EXs4 Vintage Keyboards
EXs5 ROM Expansion 2
EXs8 Rock Ambience Drums
EXs9 Jazz Ambience Drums
EXs18 Korg EXs Collections
EXs21 Italian Piano
German Mono Grand
Upright Piano
C3 (Prepared)

PCM RAM Capacity: About 2 GB
Wave Sequences
Preload: 187 Wave Sequences
User Memory 598 Wave Sequences
Support for Stereo Multi-Samples, Synchronization of Individual Notes, and Tempo-Based Settings
Combination
Number of Timbres: 16 Maximum
Master Keyboard Functionality: Keyboard and Velocity Splits, Layers, and Crossfades up to 16 Programs and/or External MIDI Devices
Advanced Vector Synthesis: Control Oscillator Volumes and Synthesis and Effects Parameters via Tempo-Synchronized Vector Envelope
Quick Layer/Split Function
Drum Kits
Assignable Stereo/Mono Samples with 8 Velocity Zones per Oscillator (with Crossfade Functions)
Programs/Drum Kits
User Memory Programs: 2560 (1792 or More Preloaded [896 or More HD-1 + 896 or more EXi])
User Memory Combinations: 1792 (480 or More Preloaded)
User Memory Drum Kits: 264 (78 or More Preloaded) 256 GM Level 2 Preset Programs + 9 GM Level 2 Drum Preset Programs
Set List
Number of Set Lists/Slots: 128 Set Lists, 128 Slots per Set List
Each Set List Provides a 9-Band Graphic EQ, and a Tone Adjust Function that Allows Program Settings to Be Adjusted
Hold Time Setting for Smooth Sound Transition (SST) Supported for Each Slot
Sampling
System: Open Sampling System (resampling, In-Track sampling)
Bit/Frequency
RAM: 16-Bit / 48 kHz Stereo/Mono Sampling
Drive: 16 or 24-Bit / 48 kHz
Sampling Time
RAM: Depends on the Amount of Available PCM RAM
Drive: Maximum of 80 Minutes Stereo (879 MB: 16-Bit)
Samples: 16,000 Samples/4000 Multi-Samples (128 Indexes per Multi-Sample) Formats: Korg Format, AKAI S1000/S3000 Data (with Advanced Program Parameter Conversion); SoundFont 2.0, AIFF, and WAVE Formats
Editing: Time Stretch, Time Slice, Crossfade Loop, and Other Standard Editing Features
Effects
Insert Effects: 12, Stereo In / Stereo Out
Master Effects: 2, Stereo In / Stereo Out
Total Effects: 2, Stereo In / Stereo Out
Timbre/Track EQ: One 3-Band EQ for Each Timbre/Track
Effect Types: 197 Different Effects Types (Any Effect Type May be Used for Insert, Master, or Total Effects)
Modulation: Dynamic Modulation and Common LFO
Effects Control Busses: Stereo Side-Chaining for Compressors, Gates, Vocoders, Etc
Effect Presets: 783, Maximum 32 per 1 Effect (Preset User) 

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Arpeggiator
Arpeggiator: One module in Program Mode, Two Modules in Combination and Sequencer Modes
Arpeggio Pattern: 2048 Presets, 1536 Users (96 Come Preload)
Controllers: On/Off, Latch
Drum Track
Preset Patterns: 718 Preset (Common with the Preset Patterns of the MIDI Sequencer)
User Patterns: 1000 Patterns (Patterns Created in SEQUENCER Mode Can be Converted to Drum Track User Patterns
Controllers: Drum On/Off
Trigger Mode/Sync/Zone Settings can Be Specified
Sequencer
Step SequenceUser Patterns: 4 Patterns (Drum Track Cannot be Used Simultaneously)
Sequencer/HDR Tracks: 16-Track MIDI Sequencer + 16-Track Hard Disk Recorder + Master TrackNumber of Songs: 200 Songs
Resolution 480 Ticks per 1/4-Note
Tempo: 40.00 to 300.00 (1/100 BPM Resolution)
Maximum Memory: 400,000 MIDI Events (with MIDI Data Only) or 300,000 Audio Events (with Audio Data Only)
MIDI Tracks:16 Tracks Plus the Master Track 718 Preset / 100 User Patterns (per Song) 18 Preset / 16 User Template Songs
Format: Korg (NAUTILUS, KRONOS, OASYS) Format, SMF Formats 0 and 1
Audio Tracks:16-Track Playback, 4-Track Simultaneous Recording, WAV File Format 16-Bit / 24-Bit Automation: Volume, Pan, EQ, and Send 1/2 10,000 Regions (Maximum), Event Anchors, BPM Adjust Other Functions: RPPR (Realtime Pattern Play and Record): 1 Pattern Set per Song
Media
Load, Save, Utility, Data Filer Function (Save/Load MIDI System Exclusive Data), CD-R/RW (UDF Format read/write), ISO9660 Level 1
Controllers
Joystick, Switches 1 & 2 ARP
Controller Section: Switches:On/Off, Latch
Drum Controller Section: Switches: On/Off
Display
TouchView Graphical User Interface, 7.0″ / 177.8 mm TFT, WVGA (800 x 480 Dots), Adjustable Brightness
Frequency Response
20 Hz to 22 kHz ±1.0 dB, 10 Kilohms Load
THD+N
0.01% (20 Hz to 22 kHz ±1.0 dB, 10 Kilohms Load)
Signal-to-Noise Ratio (SNR)
95 dB Typical
Dynamic Range
95 dB Typical
Crosstalk
95 dB, at 1 kHz (Typical)
Audio Outputs
Analog:
Audio Outputs (Main) L/Mono, R
Audio Outputs (Individual) 1-4
1/4″ / 6.35 mm TRS Balanced
Output Impedance: 350 Ohms Stereo; 175 Ohms Mono (L/Mono Only)
Nominal Level: +4.0 dBu
Maximum Level: +16.0 dBu
Load Impedance: 600 Ohms or Greater
Master Volume Slider Controls Only Audio Outputs (Main) L/MONO and R

Headphones:
1/4″ / 6.35 mm Stereo Phone Jack
Output Impedance: 33 Ohms
Maximum Level: 60+60 mW at 33 Ohms
Master Volume Slider (Link with Audio Outputs Main)

Digital:
USB Type-B
Format: 24-Bit
Sample Rate: 48 kHz
2 Channels (Digital Output of the Same Signals as Audio Outputs (Main – L/Mono and R)
Audio Inputs
Analog:
Audio Inputs 1,2:
1/4″ / 6.35 mm TRS Balanced
Input Impedance: 10 Kilohms
Nominal Level: Line +4 dBu (Analog Input Gain = Min), -36 dBu (Analog Input Gain = Max)
Nominal Level: Mic -22 dBu (Analog Input Gain = Min), -55 dBu (Analog Input Gain = Max)
Maximum Level: Line +16 dBu (Analog Input Gain = Min), -24 dBu (Analog Input Gain = Max)
Maximum Level: Mic -10 dBu (Analog Input Gain = Min), -43 dBu (Analog Input Gain = Max)
Source Impedance: 600 Ohms

Digital:
USB Type-B
Format: 24-Bit
Sample Rate: 48 kHz
2 Channels
Control Inputs
Damper (Half Damper Supported)
Assignable Switch
Assignable Pedal
MIDI
In, Out, Thru: 3 x 5-Pin DIN
USB
USB Type-A: For Connection to QWERTY Keyboards, MIDI Controllers, Ethernet Adapters, and Storage Devices
USB Type-B
MIDI/Audio Interface
MIDI: 1 x (16 Channels) Input / 1 x (16 Channel) Output
Audio: 2 x Channel input / 2 x Channel Output

2 x USB 2.0 High-Speed Ports (Supports 480 Mbps)
Drive
60 GB SSD
Power
Power Supply: AC Power Supply Terminal
Power Consumption: 40 W
Dimensions
48.3 x 15.2 x 4.6″ / 122.7 x 38.6 x 11.6 cm
Weight
32.2 lb / 14.6 kg
Packaging Info
Package Weight
39.5 lb
Box Dimensions (LxWxH)
53.5 x 19 x 8.38″

Based on 1 review

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  1. James –

    According to Korg, the Nautilus is a re-imagining of the Korg Kronos Workstation, to include virtually the same sound set, a smaller control surface, slightly smaller screen and a scaled down Arpeggiator. Korg dropped the fully weighted keyboard on the 73 Key model and replaced it with a full size, semi-weighed synth action keyboard. My first impression was entirely positive, the weight saving was obvious, and the available sound set is the same nine (9) high quality sound engines available on the Kronos. The overall build quality was impressive, with several exceptions. The minimalist control surface should please most players, but not everyone. The Arpeggiator implementation come sans the KARMA software and while the loss of KARMA Arpeggiator functionality may put off some composers (like me), most performers will find the arpeggiator implementation on the Nautilus more than adequate. In the end I guess it depends on where you are coming from. If you have been using the Kronos and just want a lighter, more economical version of the Kronos, you may like what the Nautilus has to offer. Of course, it is not always that simple and it depends on the keyboard you are comfortable with. If you are looking for a hammer action keyboard, then the 88 Key model is the only choice. I liked the Synth Action keyboard allot, it is full size and plays well, but for my requirements it did not measure up. One other issue for me was the use a

    cheap power switch. Not a big deal, but indicative of a lesser build quality that one might expect from Korg. All that said, I would highly recommend the Nautilus.

    James –

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