KROSS-61 
61 key
*Velocity sensitive is supported, after touch is not supported 
*Standard C2 - C7 (transposable in the range [C1...C6]-[C3...C8])

KROSS-88
88-key: NH (Natural Weighted Hammer Action) keyboard 
*Velocity sensitive is supported, after touch is not supported 
*Standard A0 - C8 (transposable in the range [A-1...C7]-[A1...C9]) 
*The NH keyboard reproduces the touch of an acoustic piano, with a heavier feel in the low register and a lighter feel in the upper register.  

System  

EDS-i (Enhanced Definition Synthesis-integrated)

Sounds 
Maximum Polyphony:  

80 voices (80 Oscillators) / Single Mode
40 voices (40 Oscillators) / Double Mode

*The maximum simultaneous voice polyphony will vary depending on oscillator settings such as stereo multi-samples and velocity crossfading.

Preset PCM Memory:  

Approximately 112 MB (In case of 48 kHz, 16-bit Linear PCM converted)
421 multi-samples (including 6 Stereo multi-samples)
890 drum samples (including 49 Stereo drum samples)

Program:  

Oscillator
OSC1 (Single), OSC1 + 2 (Double): Stereo multi-samples are supported, and four levels of velocity switching/crossfading/layering are possible for each oscillator

Filters
Four types of filter routing (single, serial, parallel, 24 dB)
Two multi-mode filters per oscillator (low pass, high pass, band pass, band reject)

Modulation
For each oscillator: two envelope generators (Filter & Amp), Two LFOs, Two key tracking generators
(Filter & Amp), Two AMS mixers, Pitch EG, Common LFO, Two common key tracking generators

Combination:  

The Number of Timbre
Max: 16 Timbres,
Key zone and velocity zone settings can be used to switch sounds, and the Tone Adjust function allows Program settings to be modified

Master Keyboard Functionality
External MIDI device control

Drum Kit:  

Stereo and mono drum samples
4 velocity zones switch (crossfades and layers)

The number of Combination / Program / Drum Kit:  

User: 640 Program (512 Preload)
User: 384 Combination (256 Preload)
User: 48 Drum Kit (32 Preload)
Preset: 256 GM2 Program + 9 GM2 Drums Program

Favorite:  

User: 64 (16 favorite x 4 bank)

Effects 
Insert Effects:  

5 Insert Effects (stereo in/out)

Master Effects:  

2 Master Effects (stereo in/out)

Effect Types:  

Total: 134 types 
*74 types for Insert Effect
*101 types for Master Effect 1
*120 types for Master Effect 2

Modulation:  

Dynamic Modulation

Effects Control Busses:  

Stereo side chain (Limiter, Gate, Vocoder, etc)

Polyphonic Arpeggiator
Program Mode:  

1 unit

Combination, Sequencer Mode:  

2 units

Number of pattern:  

1,028 User Arpeggio patterns (916 Preload)
5 Preset Arpeggio patterns

Number of Tone:  

12 tones

Number of step:  

Max: 64 steps

Step Sequencer
Program Mode:  

1 unit

Combination Mode:  

1 unit

Sequencer Mode:  

1 unit

Number of Tone:  

12 tones

Number of step:  

Max: 64 steps

*Step sequencer settings can be created independently for each program, combination, and song.

Drum Track  

Preset: 700 patterns (shared with sequencer patterns)
Trigger Mode/Sync/Zone settings

Sequencer 
Tracks:  

16-track MIDI Sequencer

Number of Songs:  

Max; 128 Songs

Resolution:  

1/480

Tempo:  

40.00 - 300.00 (1/100 BPM resolution)

Maximum memory:  

210,000 MIDI events

Counter:  

Measure / Beat / Tick

Template Song:  

16 preset / 16 user template songs

Preset:  

700 Patterns (shared with Drum Track patterns)

Format:  

KORG (KROSS) format, SMF format 0 and 1

Audio recorder 
Recording format:  

PCM Audio format (48 kHz / 16-bit)

Import:  

WAV (.wav): 44.1 kHz* / 16-bit, 48 kHz / 16-bit, Stereo
*Automatic conversion from 44.1 kHz to 48 kHz

Export:  

WAV (.wav): 48 kHz / 16-bit,

Continuity recording time:  

Max: 3 hours

Recording time:  

Depends on the SD card that is used; approximately 90 minutes per 1 GB

Number of Songs:  

Max; 200 Songs

Number of multi-track recordings:  

Depends on the amount of space remaining on the SD card

Counter:  

Hour / Min / Sec

Media 

File, Utility, Information

Controllers 

General Control:
Pitch bend wheel, Modulation wheel, SW [1], SW [2], TEMPO knob, TAP button

Step Sequencer/Favorite: 
1-16 buttons, STEP SEQ button, SET UP button for Control, RUN button, FAVORITE button, 
BANK button for Control, LED: A/B/C/D (It uses both as 밪TEP SEQ� and 밊AVORITE�), 

Drum track: 
DRUM TRACK button

Arpeggiator: 
ARP button

Effect On/Off: 
MASTER FX button 

Audio Recorder: 
SETUP button, PLAY/PAUSE (> / II) button

User Interface 
Display:  

240 x 64 pixel LCD w/backlight, with adjustable contrast (hold the EXIT button and turn the Value dial)

Category:  

[CATEGORY], [SELECT] dials

Mode:  

[COMBI], [PROG], [SEQ], [GLOBAL/MEDIA] buttons

VALUE controller:  

[VALUE] Dial, [Cursor (Left/Right/Up/Down)], [EXIT], [ENTER],[FUNCTION],[PAGE+],[PAGE-],[MENU] buttons

SEQUENCER:  

[PAUSE], [REW], [FF], [LOCATE], [REC], [START / STOP] buttons

TEMPO:  

[TEMPO] knob, [TAP] button

Split/Layer:  

[SPLIT], [LAYER] buttons

Others:  

[AUDIO IN] button, [VOLUME] knob

Control Input 

DAMPER (Half Damper is supported)
ASSIGNABLE SWITCH
ASSIGNABLE PEDAL

Outputs 
AUDIO OUTPUT (L/MONO, R)  

6.3mm Phone jack, Unbalanced
Output Impedance: 1.1kO (L / Mono terminal: in case of Mono output, = 550O)
Maximum level: +10.0 dBu, Load Impedance: more than 10 kO.

Headphone Output:  

3.5mm Stereo mini phone jack
Output Impedance: 33O, Maximum level: 40 + 40 mW

Inputs 
AUDIO INPUT (Line In):  

3.5mm Stereo mini phone jack
Input Impedance: 1.1 kO
Maximum level: -42 ~� 0 dBu

MIC IN:  

6.3mm Phone jack, Unbalanced
Input Impedance: 33 O
Maximum level: -48 ~ -6 dBu

MIDI  

IN, OUT

USB  

Type B x 1 (USB-MIDI Interface)

SD Card Slot  

1 slot
Max: 2 GB SD Memory Card is supported
Max: 32 GB SDHC Memory Card is supported
(SDXC Memory Cards are not supported)

Power Supply 

AC Adaptor (DC9V), POWER button
AA alkaline battery x 6 or AA Ni-MH: Nickel metal hydride battery x 6

Battery Life: 

In case of AA alkaline battery x 6 = Approximately 4 hours*
In case of AA Ni-MH: Nickel metal hydride battery (1900 mAh) x 6 = Approximately 5 hours*
*Varies according to the batteries used and the conditions of usage

Power Consumption 

5 W

Dimensions (W x D x H)  

KROSS-61 = 37.09 x 11.06 x 3.58 inches / 942 x 281 x 91 mm
KROSS-88 = 57.01 x 15.08 x 5.32 inches / 1,448 x 383 x 135 mm

Weight  

KROSS-61 = 9.48 lbs. / 4.3 kg
KROSS-88 = 27.34 lbs. / 12.4 kg

Accessories 

AC Adapter
Quick Start Guide

Option 

XVP-10 Expression/Volume pedal
EXP-2 Foot Controller
DS-1H Damper Pedal
PS-1, PS-3 Pedal Switch

Computer System Requirements for the KORG USB-MIDI Driver

Windows
OS:  

Microsoft Windows XP Home/Professional Edition SP3
Windows Vista SP2 (all editions including 64-bit edition)
Windows 7 SP1 (all editions including 64-bit edition)
Windows 8 (all editions including 64-bit edition)

Computer:  

USB port (Intel USB Host Controller recommended)

Macintosh
OS:  

Mac OS X 10.5, 10.6, 10.7, 10.8

Computer:  

Apple Macintosh that satisfies the operating requirements of Mac OS X and is equipped with an Intel processor and a USB port

* Specifications and appearance are subject to change without notice for improvement.