
Introduction to OASYS
16
A new leap to the ideal workstation – a 
16-track MIDI sequencer plus a 16-track 
hard disk recorder
The sequencer of the OASYS provides plenty of 
capacity, with a maximum of 200 songs and 400,000 
MIDI events or 300,000 audio events. It consists of a 16-
track MIDI sequencer and 16-track hard disk recorder, 
giving you a total of 32 tracks. In addition to realtime 
recording and step input, the MIDI sequencer is also 
able to record phrases generated by the KARMA 
function, the internal rhythm patterns, and RPPR 
(Realtime Pattern Play/Recording) function, letting 
you create sequence tracks quickly and easily. After 
you’ve recorded your performance, you can easily 
perform detailed event editing. There’s also a Template 
Song function that’s convenient when you’re ready to 
start creating MIDI tracks. Simply select a template 
that contains the instruments and effects appropriate 
for the style of song you want to create, and start 
recording immediately. The Tone Adjust function lets 
you make temporary adjustments to the sound of the 
program used by each track, so you can stay in 
Sequence mode while creating your song, and make 
adjustments as desired – for example by softening the 
tone of the bass or speeding-up the attack of a string 
sound. You can also make the sound change in realtime 
during a song by recording and playing back MIDI 
system exclusive messages. The OASYS provides a 
seamless environment that unifies MIDI and audio-
based song production, with audio-related functions 
such as Time Slice and the In-Track Sampling function 
that lets you sample an external audio source that’s 
playing along with your song (sequence data) and 
automatically place the appropriate note data in a track 
to trigger the sample. With this type of highly 
integrated environment, you’ll be able to produce 
high-quality songs in an amazingly short time. You can 
use the control surface for intuitive and smooth 
control.
The 16-track hard disk recorder records 16-bit 
uncompressed 48 kHz audio data. Not simply an 
audio recorder, it also provides automation 
functionality as well as editing capabilities that are just 
as sophisticated and detailed as provided for the MIDI 
track sequencer, offering commands such as Copy, 
Paste, Fade, Normalize, Time Stretch/Compress, and 
Audio Event Editing. The OASYS provides everything 
you need for any situation – from songwriting to full-
fledged recording.
The effect section lets you use up to sixteen effects 
simultaneously, providing twelve Insert Effects that 
can be applied independently to each track, two 
Master Effects that can be applied to sends 1/2, and 
two Total Effects that can be applied to the final stage 
of playback for all tracks to add a finishing touch to 
your sound. You can choose from 185 types of effect 
that cover every need. These effect types range from 
effects ideal for recording, such as a guitar amp model 
+ cabinet, bass amp model + cabinet, and mic 
modeling + preamp, through effects used for 
mastering, such a stereo mastering limiter.
When you’ve completed your MIDI and audio tracks, 
you can turn the result into a two-channel audio CD. 
The OASYS is the only piece of equipment you need to 
take your creation all the way to its final state. With the 
extra-large color LCD to display relevant information, 
the intuitive operation allowed by the TouchView 
system, and the front panel control surface, the music-
making power of the OASYS is under your complete 
control at all times. Audio data can be stored not only 
on the internal hard disk, but also on an external USB-
connected hard disk.
Your completed MIDI and audio tracks can be mixed 
down to two channels, and burned to an audio CD 
using the internal CD-R/RW drive.
This audio data can also be stored on the internal hard 
disk drive.
Detailed Specifications
• Tracks:16-track MIDI sequencer + 16-track hard 
disk recorder + 1 master track
• Number of songs: 200
• Resolution: 1/192nd of a quarter note
• Tempo: 40.00–240.00 (1/100 BPM steps)
• Maximum storage capacity: 400,000 MIDI events 
(MIDI data only) or 300,000 audio events (audio 
data only)
• MIDI tracks: 16 tracks + 1 master track, 156 preset 
and 100 user patterns (per song), 18 preset and 16 
user template songs. Formats: Korg (OASYS) 
format, support for SMF formats 0 and 1
• Audio tracks: Maximum simultaneous playback of 
16 tracks, maximum simultaneous recording of 4 
tracks, WAVE file format. Maximum continuous 
recording time 80 minutes (monaural). Automation: 
volume, pan, EQ, send 1/2. Maximum 5,000 
regions. Event Anchor function. BPM Adjust 
function
• RPPR: One pattern set available per song
6-channel audio input and 10-channel 
audio output to meet any situation
The OASYS provides a total of six audio inputs; four 
channels of analog input, and two channels of digital 
input. Analog inputs 1 and 2 use combo jacks that can 
accommodate either phone plugs or XLR plugs. With 
MIC/LINE select switches, phantom power switches, 
and level adjustment knobs, the inputs will accept any 
source from mic level to professional level. For digital 
input, the OASYS provides an S/P DIF jack (optical, 48 
kHz/96 kHz). As outputs, there are the main 
L/MONO and R outputs as well as eight individual 
audio outputs and an S/P DIF (optical, 48 kHz/96 
kHz) output. 24-bit resolution is used for the A/D and 
D/A converters that are such crucial elements for 
determining the audio quality of the input and output.