KORG Oasys

Open architecture synthesis studio

Two models to choose from
OASYS comes in two configurations, a 76-note synth action keyboard and an 88-note weighted action keyboard which features Korg's best graded action (RH2) so the low notes are heavier than the upper, just like a real piano. Of course both actions support after-touch sensitivity.

OA (Open Architecture) Synthesis System

Tone Generator
Expansion PCM Libraries
310MB (EXs 1 ROM Expansion: 228 multisamples, 1,483 drum samples),
511MB (EXs 2 Concert Grand Piano: 5 stereo multisamples)
Capacity of PCM RAM

*3 The memory available for RAM samples will change based on the use of Expansion PCM libraries; the total RAM memory capacity will be increased in the near future with a system software upgrade.

Wave Sequences
374 user memory, 150 preload

PCM Program
Advanced Vector Synthesis
Control oscillator volumes, synth parameters, effect parameters via the Vector joystick and the tempo-synced Vector Envelope

AL-1 Analog Synthesizer
Five Envelope generators, four per-voice LFOs, two Key Tracking generators, and two AMS Mixers.
Per-voice Step Sequencer: 32-step sequencer with smoothing, adjustable step duration, and tempo synchronization.

CX-3 Tonewheel Organ
Tonewheel Organ Modeling
A further evolution of Korg\'s acclaimed CX-3. 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).
Upper, Lower (even in EX mode)

Two AMS mixers

Number of Timbres
16 Maximum
Master Keyboard Functionality
Keyboard and velocity splits, layers, and crossfades of up to 16 Programs and/or external MIDI devices
Advanced Vector Synthesis
Control oscillator volumes and synthesis & effects parameters via the Vector Joystick and the tempo-synchronized Vector Envelope.

Tone Generator
Maximum Polyphony*1*2
HD-1: 172 voices (172 oscillators)
AL-1: 84 voices
CX-3: 172 voices

*1 Maximum polyphony depends on the kinds of synthesis engines and the number of effects being used.
*2 OASYS dynamically allocates voices to multiple synthesis engines when they are used simultaneously.

PCM Program
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 filters, EGs, LFOs, etc.

Open Sampling System (resampling, In-Track sampling) 16bit/48kHz stereo/mono samping, maximum 512MB memory, 4,000 samples/1,000 multisamples (128 indexes per multisample), direct sampling (ripping) from audio CD (CD-DA), able to load Korg format, AKAI S1000/S3000 data (with advanced Program parameter conversion), AIFF, and WAVE formats.Time Stretch, Time Slice, Crossfade Loop, and other standard editing features.

Insert Effects
12 Insert Effects; in-line processing, stereo in / stereo out.
Master Effects
Two Master Effects; two effects sends, stereo in / stereo out.

Total Effects
Two Total Effects; for overall processing on the main outputs, such as compression, limiting, and EQ; stereo in / stereo out.
Timbre EQ
High, low, and sweepable mid band. Per Program in Program Mode, per Timbre in Combi mode (16 total), and per Track in Sequence mode (32 total).

Effect Types
185 types (Every type can be used as an insert, master or total effect).
Dynamic Modulation
Real-time control of effects parameters.

Common LFO
Synchronized LFO modulation of multiple effects.

Effects Control Busses
Two stereo side chains (for compressors, gates, vocoders, etc.).
Rec Busses
Two stereo busses (for sampling and recording).

KARMA Modules
One module in Program mode (one control layer);
four modules in Combination and Sequencer modes (five control layers) independent, programmable real-time control settings for each Module.
Generated Effects (GE)
2,048 presets. 32 real-time parameters per GE.
13 RTC (Real Time Controller) Models provide more consistent control of KARMA parameters
ON/OFF, LATCH, CHORD, ASSIGN, MODULE, CONTROL, KARMA REALTIME CONTROL SLIDERS [1] – [8], KARMA SCENE [1] – [8], KARMA SWITCHES [1] – [8], (all other physical controllers can be used as KARMA control sources ); KARMA Waveform Control (change Multisamples via the KARMA engine), GE Sub-Categories, Free Randomize function, Time Signature Control, Tempo synchronization, Auto RTC (Real Time Control) setup.

Tone Generator
EXi (Expansion Instruments)
Analog Modeling (AL-1 Analog Synthesizer)
Tonewheel organ modeling (CX-3 Tonewheel Organ)

Control Surface
Assigns the Mixer Knobs to either CHANNEL STRIP or INDIVIDUAL PAN.
Knobs 1-8 (with LED value indicators) Channel Strip, Individual Pan, External MIDI, Realtime modulation, Tone Adjust.
Switches 1-8 (Upper Row) Play/Mute, External MIDI, KARMA Scenes, Tone Adjust.
Switches 1-8 (Lower Row) Select/Solo, External MIDI, KARMA Switches, Tone Adjust.
Sliders 1-8 (with LED value indicators)Volume, External MIDI, KARMA Control, Tone Adjust.
Master Slider (with LED value indicator) Volume, External MIDI, Tone Adjust.
KARMA Controller Section:
Disk Mode
Load, save, utility, audio CD burning, audio CD playback, data filer function (save/load MIDI System Exclusive data),CDs (UDF format read/write), ISO9660 Level 1.
TouchView graphical user interface, 10.4 inch TFT, 640x480 dots, adjustable angle.

Audio Connections
All inputs and outputs are 24-bit.
(76-key): 49.84” (W) x 19.06” (D) x 5.31” (H)
1,266 (W) x 484 (D) x 135 (H) mm

(88-key): 57.40” (W)x 19.06” (D) x 5.31” (H)
1,458 (W) x 484 (D) x 135 (H) mm
(76-key): 56.44 lbs / 25.6 kg.
(88-key): 70.99 lbs / 32.2 kg.
AC cord, CD-ROM for data restoration

OASYS Options
EXB-DI Digital Interface Board
XVP-10 Expression/Volume Pedal
EXP-2 Foot Controller
DS-1H Damper Pedal
PS-1 Pedal Switch
EXs Expansion Samples: Expansion PCM Libraries
EXi Expansion Instruments: Expansion Instrument Libraries
EXf Expansion Effects: Expansion Effect Libraries
* Sound processed with INFINITY.
* Specifications and features are subject to change without notice.
*ADAT is a registered trademark of Alesis Corp.
*KARMA(R) (Kay Algorithmic Realtime Music Architecture) and the KARMA Logo are registered trademarks representing patented technology from Stephen Kay, Karma Lab LLC, www.karma-lab.com.
OASYS 88: 88-key Real Weighted Hammer Action (RH2)
OASYS 76: 76-key synth-action

Tone Generator
Method of Synthesis
Internal: PCM (HD-1 High Definition Synthesizer)
Number of Programs/Combinations/Drumkits
1,664 user memory programs (896 (640 PCM+256EXi) come preloaded)
1,792 user memory combinations (384 come preloaded)
152 user memory drumkit (40 come preloaded)
256 GM Level2 preset programs+ 9 GM Level2 drum preset programs
Preset PCM
306MB (1,503 multisamples, 1,388 drum samples)

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

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

Per voice non-linear driver and low boost circuit
Three bands, with sweepable mid

Three envelope generators, two LFOs per voice, common LFO, four key tracking generators, AMS (Alternate Modulation Source); modulate a large number of synthesis parameters via LFOs, Envelopes, and real-time controllers. Two AMS Mixers - combine and process AMS sources. Add, multiply, smooth, quantize, and more.
Supports both stereo/ and mono drum samples, four-stage velocity switch/crossfade

EXi Program Common
Advanced Vector Synthesis
Control oscillator volumes and synthesis & effects parameters via the Vector Joystick and the tempo-synchronized Vector Envelope.
Common Step Sequencer: 32-step sequencer with smoothing, adjustable step duration, and tempo synchronization. AMS (Alternate Modulation Source); modulate a large number of synthesis parameters via LFOs, Envelopes, and real-time controllers, Common LFO, 2 Key Tracking Generators.
Three bands, (with sweepable mid)

AL-1 Analog Synthesizer
New design ultra-low-aliasing oscillators OSC1, OSC2, Sub-oscillator and noise generator; ring modulation, FM, and Sync
Audio Input
Run real-time audio through the synthesis engine, including ring mod, filters, drive circuit, amp, and EQ
Two multi-mode filter (low-pass, high-pass, band-pass and band-reject) with four types of filter routings (single, serial, parallel and 24dB mode), MultiFilter mode (only Filter-A; modulateable mix of Low Pass, High Pass, Band Pass, and dry input, for creating a wide variety of unique filter types and effects)
Per-voice non-linear driver and low boost circuit

Main Outputs (L/MONO, R): 1/4” Unbalanced; 1.1k Ohm Stereo; 550 Ohm Mono (L/MONO Only)
Individual 1-8:
Max. output level: less than +18.5dBu (when load impedance is 100k Ohm)
Headphones: 1/4” stereo phone jack, output impedance: 33 Ohm max. level: 72mW (when load impedance is 33 Ohm),
S/P DIF: Optical, 24-bit, IEC60958, EIAJCP-1201, 48kHz or 96kHz
EXB-DI (optional ADAT Output):
ADAT format Output: 24-bit, 48kHz, 8-Channel; BNC Word Clock In
Audio Inputs 1 and 2: XLR-1/4” phone combi jacks (balanced), MIC/LINE switches, level control knobs, phantom power switches,
input impedance: 10kOhm,
source impedance: 600Ù
Nominal levels: +4dBu to – 36.5dBu (LINE, level control knob=min. to max.),
-19.5dBu to – 62dBu (MIC, level control knob=min. to max.),
Maximum levels: +16dBu to – 24.5dBu (LINE, level control knob=min. to max.), -7.5dBu to – 50dBu (MIC, level control knob=min. to max.),
Audio Inputs 3 and 4: 1/4” phone jacks (unbalanced), input impedance: 10kOhm;
max. level: +16dBu,
source impedance: 600 ohm
S/P DIF: Optical, 24-bit, IEC60958, EIAJCP-1201, 48kHz or 96kHz
Control Inputs
Damper pedal (half damper supported), assignable switch, assignable pedal
In, Out, Thru
Four high-speed USB 2.0 A connectors (for external USB devices)
Disk Drives
40GB HDD (2.5”), CD-R/RW
Power Consumption

16-track MIDI sequencer + 16-track hard disk recorder + master track.
Number of Songs
200 songs

1/192 ppq (parts per quarter note)

40.00 – 240.00 (1/100 BPM resolution)

Maximum memory
400,000 MIDI events or 300,000 audio events

MIDI Tracks
16 tracks plus the master track
150 preset/100 user patterns (per song)
16 preset/16 user template songs,
Format: Korg (OASYS) format, SMF formats 0 and 1.

Audio Tracks
16-track playback, 4-track simultaneous recording; WAV file format.
Maximum single-file recording time (mono): 80 minutes;
Automation: Volume, Pan, EQ, and Send1/2. 5,000 regions (max.), Event Anchors, BPM Adjust.

RPPR (Realtime Pattern Play and Record)
1 Pattern set per song.

Performance Controllers
Vector joystick, joystick, ribbon controller, switches 1 & 2.
Pads 1-8
Velocity-sensitive drum pads and chord triggers.

Control Surface

Audio demos (a little for 'old styles' lovers indeed)
Teknosis by Peter Schwartz
Love Embraces All by Rogers Benjamin Dowling

Video by Harmony-Central

Korg Australia: MUSIC LINK E-mail tel.61-3-97656565
Korg Austria, Germany: MUSIK-MEYER E-mail -Tel 49-6421-9890
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Korg France: GAFFAREL MUSIQUE E-mail Tel. 33-1-34483838
Korg Hungary: ATEC HUNGARY E-mail Tel. 36-27-342-595
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Korg UK E-mail Tel. 44-1908-857100
Korg Usa E-mail Tel. 1-516-333-9100
Korg Ukraine: A&T TRADE E-mail Tel. 7-095-956-1105

Korg worldwide distributor full list

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60026 Numana (AN)
Korg Italia

advanced technologic sound magazine
2005 February issue 134

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