NAUTILUS

Synthesis Types: 9
SGX-2: Premium Piano (Acoustic Piano)
EP-1: MDS Electric Piano (Electric Piano)
HD-1: High Definition Synthesizer (PCM)
AL-1: Analog Synthesizer (Analog Modeling)
CX-3: Tonewheel Organ (Tonewheel Organ Modeling)
STR-1: Plucked String (Physical Modeling)
MOD-7: Waveshaping VPM Synthesizer (VPM Synthesis)
MS-20EX: Component Modeling Technology (Analog Modeling)
PolysixEX: Component Modeling Technology (CMT Analog Modeling)

Maximum Polyphony*1*2

SGX-2: 100 voices*3
EP-1: 104 voices
HD-1: 140 voices
AL-1: 80 voices
CX-3: 200 voices
STR-1: 40 voices
MOD-7: 52 voices
MS-20EX: 40 voices
PolysixEX: 180 voices

1: In rare cases, when a large number of processor-intensive effects are active simultaneously (for instance, more than 14 O-Verbs), polyphony may be slightly reduced.
*2: A portion of the multicore processor in KRONOS is devoted to generating voices, and a separate portion is devoted to generating effects. KRONOS dynamically allocates the voice processing power between the engines as necessary. The quoted maximum numbers of voices apply when 100% of the voice processing power is devoted to a single engine.
*3: 100 dual-stereo notes (equivalent to 400 mono voices)

Preset PCM

RAM 496 MB / DISK 2.3G (ROM 1,771 Multisamples, 3,955 Drumsamples)

Build-in Expansion PCM Libraries

EXs301: German2 D Piano
EXs302: Italian F Piano
EXs303: Japanese Upright U Piano
EXs304: Prepared Piano
EXs305: Historical Keyboards
EXs306: Vintage Keyboards 2
EXs307: Strings & Synths
EXs308: Guitar Collection
EXs309: Bass Collection
EXs310: World Essence
EXs311: Background Loops
EXs312: SFX & Hits
EXs313: Found Percussions
EXs314: Expansion Drums

PCM RAM Capacity

Approx. 2GB *4

*4: The memory available for Sampling Mode will change based on the use of Expansion PCM libraries and User Sample Banks. Approx. 760 MB is available when shipped from the factory (When loading the file named “PRELOAD.KSC”).

Wave Sequences

598 User memory, 377 Preload
Support for stereo multisamples, synchronization of individual notes, and tempo-based settings.

Premium Piano

Full key stereo sampling, Chromatically sampled at up to 12 velocity levels, no looping.
Damper resonance and mechanical noise are reproduced.
Una Corda sample support

PCM

EXs301 – German2 D Piano
12 velocity levels, includes Ambience Piano type/samples

EXs302 – Italian F Piano
12 velocity levels, no Una Corda samples

EXs303 – Japanese Upright U Piano
8 velocity levels

Exs304 – Prepared Piano
1-4 velocity levels

Piano Type

128
(With the factory settings, the 64 varieties of EXs6: German D Piano, EXs7: Japanese C Piano, EXs12: SGX-1 Austrian D Piano, EXs17: Berlin D Piano do not produce sound. The options must be downloaded. (Those will be released at a later date.))

Oscillator Control

Damper Resonance
Damper Noise
Mechanical Noise
Note Release
String Resonance
Una Corda

MDS Electric Piano

Tine and reed-type electric pianos powered by Multi-Dimensional Synthesis (MDS), and vintage effects.

Electric Piano Model Types : 7
Tine EP I Early, Tine EP I Late, Tine EP II, Tine EP V, Tine EP DMP, Reed EP200, Reed EP200A

Oscillator Control

Harmonic Sound Level, Attack Noise, Level, Release Noise Level, Attack Brightness, Hammer Width

Panel Control

Tine Type
Preamp Volume, Tone (Treble, Bass), Vibrate (On/Off, Intensity, Speed), Amp/Cabinet (On/Off, Drive)

Reed Type
Preamp Volume, Tone (Treble, Bass), Vibrate (Intensity, Speed), Amp/Cabinet (On/Off, Drive)

Effect Types : 9
Small Phase, Orange Phase, Black Phase, Vintage Chorus, Black Chorus, EP Chorus, Vintage Flanger, Red Comp, VOX Wah

Advanced Vector Synthesis

Control oscillator volumes and synthesis & effects parameters via the Vector Joystick and the tempo-synchronized Vector Envelope.

Structure

Single: only OSC1, Double: OSC1 and OSC2.
Double mode lets you layer two completely separate synth voices, each with their own velocity-switched oscillator, dual filter, EGs, LFOs, etc.
Drums: One drum kit, Double Drums: Two drum kits.

Oscillators

8 velocity zones per oscillator, with switching, crossfades and layering
Each zone can play mono or stereo Multisamples or Wave Sequences

Filters

Two multi-mode filters per voices (low-pass, high-pass, band-pass and band-reject), Four-mode filter routings (single, serial, parallel and 24dB mode)

Driver

Per voice non-linear driver and low boost circuit

EQ

Three bands, with sweep-able mid

Modulation

Three envelope generators, two LFOs per voice, common LFO, four key tracking generators, AMS (Alternate Modulation Source), two AMS mixers

Quick Layer / Split function

Advanced Vector Synthesis

Control oscillator volumes and synthesis & effects parameters via the Vector Joystick and the tempo-synchronized Vector Envelope

Modulation

Common Step Sequencer, AMS (Alternate Modulation Source), Common LFO, 2 Key Tracking Generators

EQ

Three bands, with sweep-able mid

Quick Layer / Split function

Oscillators

Ultra-low-aliasing oscillators, OSC1, OSC2, Sub-oscillator and noise generator; ring modulation, FM and Sync

Audio Input

External audio can be processed through the ring modulator, filter, driver, amp, and EQ

Filters

Two multi-mode filters (low-pass, high-pass, band-pass and band-reject) with four types of filter routings (single, serial, parallel and 24dB mode), Multi Filter mode (only Filter-A; modulatable mix of Low Pass, High　Pass, Band Pass, and dry input, for creating a wide variety of unique filter types and effects)

Driver

Per-voice non-linear driver and low boost circuit

Modulation

Five Envelope generators, four per-voice LFOs, two AMS Mixers; Per-voice Step Sequencer

Tonewheel Organ Modeling

Phase-synchronous tonewheels (clean and vintage modes), percussion, key click, wheel brake

EX Mode

Four additional, user-specified drawbars, and expanded percussion

Internal Effects

Rotary speaker, vibrato/chorus, amp modeling with overdrive, 3-band EQ

Drawbar Control

Controlled via nine front-panel sliders (via Tone Adjust)

Split

Upper, Lower (even in EX mode)

Modulation

Two AMS mixers

Physically Modeled String

Includes physically modeled damping, decay, dispersion, nonlinearity, harmonics, dual pickups, and more. Most string parameters can be controlled in realtime

String Excitation

Three independent excitation sources can be used simultaneously: Pluck, Noise, and PCM. 16 preset “pluck” types, with modulatable width and randomization. Noise generator with saturation and dedicated low pass filter

PCM Oscillator
KORG’s ultra-low-aliasing technology, as introduced in the HD-1; 4 velocity zones per oscillator; Uses any mono Multisamples, including ROM, EXs, User Sample Bank, or Sampling Mode. Supports Virtual Memory.

Excitation Filter
Dedicated 2-pole multimode filter for shaping the string excitation. Filter can be enabled/disabled separately for each excitation source. Low Pass, High Pass, Band Pass, and Band Reject modes

Audio Input and Feedback

Run real-time audio through the string, including feedback through effects. Modeled feedback includes modulate-able instrument-to-amp distance and orientation

Filters

Dual multi-mode filters per voice; Single, Serial, Parallel (with split stereo output), and 24dB (4-pole) configurations. Low Pass, High Pass, Band Pass, and Band Reject modes

Multi Filter Mode (Filter A only)
Modulatable mix of Low Pass, High Pass, Band Pass, and dry input, for creating a wide variety of unique filter types and effects

Modulation

5 Envelopes, 4 per-voice LFOs, 2 Key Track generators, String Tracking generators, 4 AMS Mixers

Waveshaping VPM Synthesizer

Combines Variable Phase Modulation (VPM), Waveshaping ring modulation, PCM sample playback, and subtractive synthesis; Able to convert-load SYX files

Oscillators

6 VPM/Waveshaper/Ring Modulation Oscillators
Phase and modulatable pitch per oscillator. 101 Waveshaper tables plus modulatable Drive and Offset. Use as oscillators, or as Waveshapers or Ring Modulators for other signals

PCM Oscillator
KORG’s ultra-low-aliasing technology, as introduced in the HD-1. 4 velocity zones per oscillator.Uses any mono Multisamples, including ROM, EXs, User Sample Bank, or Sampling Mode. Supports Virtual Memory

Noise Generator (With saturation and low-pass filter function)

Audio input

Run real-time audio through the VPM Oscillators and filters.

Filters

Dual multi-mode filters per voice. (Low Pass, High Pass, Band Pass, and Band Reject modes) , Two types of filter looping (Parallel and 24 dB “4-Pole”)

Multi Filter mode (Filter A only)
Modulatable mix of Low Pass, High Pass, Band Pass, and dry input, for creating a wide variety of unique filter types and effects

Patch Panel

Supports both preset algorithm (78 types) selection and free patching.Three 2-in, 1-out mixers for scaling and merging audio, fully modulatable, with phase inversion. Main 6-input stereo mixer, with modulatable pan and volume, plus phase inversion

Modulation

10 Envelopes, 4 per-voice LFOs, 9 Key Tracking generators, Per-voice Step Sequencer, 4 standard AMS Mixers plus 4 simple AMS Mixers

Oscillators

Ultra-low-aliasing oscillators; VCO1, VCO2, Ring Mod, Pink and White Noise Generator

Audio Input

Run real-time audio through the synthesis engine and ESP (External Signal Processor)

Filters

12dB/octave High Pass and Low Pass self-resonant filters

ESP section
24dB/octave Low Cut and High Cut filters, available per voice.

Patch Panel

Patchable audio and modulation, at audio rates

Patch Points

Keyboard
Keyboard CV Out, Keyboard Trigger Out, VCO1+VCO2 CV In, VCO2 CV In

VCO
VCO1+VCO2 External Frequency Control In, VCO1 Out, VCO2 Out

VCF
External Signal In, External HP Filter Cutoff Frequency Control In, External LP Filter Cutoff Frequency Control In, HPF Out, LPF In, LPF Out

VCO+VCF
Total External Modulation In

VCA
External Initial Gain Control In, VCA In

EG
EG1 Envelope Signal Normal Out, EG1 Envelope Signal Reverse Out, EG1+EG2 Trigger In, EG1 Trigger In, EG2 Envelope Signal Reverse Out

MG
Triangle Out, Rectangle Out

Noise Generator
Pink Noise Out, White Noise Out

Sample and Hold
Clock Trigger In, Sample Signal In, S/H Out

Modulation VCA
Control Voltage In, Signal In, Signal Out

Manual Controller
Control Wheel Out, Momentary Switch

ESP
Signal In, AMP Out, BPF In, BPF Out, F-V CV Out, Envelope Out, Trigger Out

Others
EXi Audio In, Mixer 1 In, Mixer 1 Out, Mixer 2 In, Mixer 2 Out

ESP (External Signal Processor):

Use incoming audio as a trigger and/or CV source

Modulation

Original DAR (Delay, Attack, Release) and HADSR (Hold, Attack, Decay, Sustain, Release) EGs 1 &2, Original MG (with MIDI sync), Sample-and- Hold, MVCA, NAUTILUS: 4 additional multi-stage Envelopes, 4 additional per-voice LFOs, and 4 AMS Mixers.

Oscillators

VCO
Saw, Pulse, PWM

Sub Oscillator:
Off, 1 octave below, 2 octaves below

Filter

24dB(4-Pole) Octave Low Pass self-resonant filter

Effects

Integrated Polysix Chorus, Phaser, and Ensemble

Arpeggiator

Integrated MIDI-synced arpeggiator, with adjustable Range, Mode, and Latch

Modulation

Polysix
Original ADSR EG and MG (with MIDI sync).

NAUTILUS
2 additional multi-stage Envelopes, 2 additional per-voice LFOs, and 4 AMS Mixers.

Number of Timbres, Master Keyboard Functionality

16 Maximum
Keyboard and velocity splits, layers, and crossfades of up to 16 Programs and/or external MIDI Devices
The tone adjust parameter function lets you modify program settings, and the master keyboard function lets you control external MIDI devices

Advanced Vector Synthesis

Control oscillator volumes and synthesis & effects parameters via the Vector Joystick and the tempo-synchronized Vector Envelope

Quick Layer / Split function

User Memory Programs

2,560 (1,920 [1,280 HD-1+640 EXi] come preloaded)

User Memory Combinations

1,792 (256 come preloaded)

User Memory Drum Kits

264 (104 come preloaded)

256 GM Level2 preset programs + 9 GM Level 2 drum preset programs

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
Transpose setting
Hold Time setting of Smooth Sound Transition (SST) supported for each slot

System

Open Sampling System (resampling, In-Track sampling)

Bit Depth/Sampling Frequency

RAM
16-bit/48 kHz stereo/mono sampling

DISK
16 or 24-bit/48 kHz

Sampling Time

RAM
Depends on the amount of available PCM RAM

DISK
Maximum 80 minutes stereo (879MB: 16bit)

Sample Locations

16,000 samples/4,000 multisamples (128 indexes per multisample)

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.

Insert Effects

12
Stereo in / stereo out

Master Effects

2
Stereo in / stereo out

Total Effects

2
Stereo in / stereo out

Timbre EQ

One 3-band EQ for each timbre/track

Effect Types

197

Modulation

Dynamic Modulation and Common LFO

Effects Control Busses

Stereo side-chaining for compressors, gates, vocoders, etc

Effect Presets

Total 783 preset, Maximum 32 per 1 effect (Preset User)

Arpeggiator Modules

One module in Program mode, two modules in Combination and Sequencer modes

Arpeggio Pattern

5 presets + ARP A 2,048 slots (1,593 come Preload) + ARP B 128 slots

Controllers

On/Off, Latch, Gate, Velocity, Length, Swing, Tempo

Preset Patterns

1,272 (common with the preset patterns of the MIDI sequencer)

User Patterns

1,000
Patterns created in Sequencer mode can be converted to drum track user patterns.

Trigger Mode/ Sync / Zone / Swing, Drum SD, Tempo settings can be specified.

Tracks

16-track MIDI sequencer + 16-track hard disk recorder + 1 master track.

Number of Songs

200

Resolution

1/480

テTempo

40.00 – 300.00 (1/100 BPM resolution)

Maximum Memory

400,000 MIDI events or 300,000 audio events

MIDI Tracks

16 tracks plus the master track, 697 preset / 100 user patterns (per song), 18 preset/16 user template songs,

Audio Tracks

16-track playback, 4-track simultaneous recording, WAV file format 16bit/24bit
Maximum Single-file Recording Time (mono): 80 minutes
Automation: Volume, Pan, EQ, and Send1/2
10,000 regions (max.)
Event Anchors, BPM Adjust

Other Functions

RPPR (Realtime Pattern Play and Record): 1 Pattern set per song
Auto Song Setup function

Disk Mode

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
Arpeggiator Control: On/Off, Latch, Gate, Velocity, Length, Swing, Tempo
DRUM TRACK: On/Off, Swing, Drum SD, Tempo

Display

TouchView graphical user interface, 7 inch color TFT, WVGA (800 x 480 dots), adjustable brightness

Principal Specifications

Frequency Response
20Hz-22kHz, +/-1.0dB, 10k Ω load

THD+N
20Hz-22kHz, 0.01%, 10k Ω load (typical)

S/N
95dB (typical)

Dynamic Range
95dB (typical)

Crosstalk
95dB, at 1kHz (typical)

Outputs

L/MONO, R, Individual 1-4
1/4” TRS Balanced
Output Impedance: 350 Ω Stereo; 175 Ω Mono (L/MONO Only),
Nominal Level: +4.0 dBu,
Maximum Level: +16.0 dBu (when load impedance is 600 Ω or greater)
MAIN VOLUME slider controls only AUDIO OUTPUT (MAIN) L/MONO and R

Headphones
1/4” stereo phone jack
Output impedance: 33 Ω,
Maximum Level: 60+60 mW (when load impedance is 33 Ω),
MAIN VOLUME knob (link with AUDIO OUTPUT (MAIN))

USB-B
24-bit, Sample Rate: 48 kHz, 2 channels
(Digital output of the same signals as AUDIO OUTPUT (MAIN) L/MONO and R)

Inputs

Audio Inputs 1 and 2
1/4” TRS Balanced
Input Impedance: 10 kΩ
Nominal Level: LINE +4 dBu
Maximum Level: LINE +16 dBu
Nominal Level: MIC –22 dBu
Maximum Level: MIC -10 dBu
Source Impedance: 600 Ω

USB-B
24-bit, Sample Rate: 48 kHz, 2 channels

Control Inputs

Damper pedal (half damper supported)
Assignable switch, Assignable pedal

MIDI

In, Out, Thru

USB

USB A (TYPE A)
For connection to external USB devices (QWERTY keyboards, MIDI controllers, ethernet adaptors, and storage)

USB B (TYPE B)
MIDI/audio interface, MIDI: 1 (16 channel) input / 1 (16 channel) output, Audio: 2 channel input / 2 channel output
*2 USB high-speed ports (supports 480Mbps)

Disk Drives

60 GB SSD (2.5”)

Power Supply

AC power supply terminal, Power switch

Dimensions: (W x D x H)

88 key: 1,437 x 387 x 139 mm / 56.57” x 15.24” x 5.47”
73 key: 1,227 x 386 x 116 mm / 48.31” x 15.20” x 4.57”
61 key: 1,062 x 386 x 116 mm / 41.81” x 15.20” x 4.57”

Weight

88 key: 23.1 kg / 50.93 lbs.
73 key: 14.6 kg / 32.19 lbs.
61 key: 13.0 kg / 28.66 lbs.

Power Consumption

40 W

Accessories

AC cord, Quick Start Guide

Option

XVP-20: Expression/Volume Pedal
EXP-2: Foot Controller
DS-1H: Damper Pedal
PS-1: Pedal Switch
PS-3: Pedal Switch