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Grandstage Grandstage

Music rest, pedal (DS-1H) are included

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Keyboard

88-key: RH3 (Real Weighted Hammer Action 3), A0–C8, velocity sensitive, aftertouch not supported

73-key: RH3 (Real Weighted Hammer Action 3), E1–E7, velocity sensitive, aftertouch not supported

Tone Generator

Methods of Synthesis and Maximum Polyphony *
SGX-2 (Acoustic Piano Sound Engine): 60 dual stereo notes (equivalent to 240 voices max.)
EP-1 (Electric Piano Sound Engine): 100 voices
AL-1 (Analog Modeling Sound Engine): 36 voices
CX-3 (Tonewheel Organ Sound Engine): 128 voices
VOX Organ (Transistor Organ Sound Engine): 100 voices
Compact Organ (Transistor Organ Sound Engine): 100 voices
HD-1 (PCM Sound Engine): 64 stereo notes (equivalent to 128 voices max.)
Preloaded PCM Storage Capacity
Approx. 19 GB (approx. 32 GB using linear conversion)
Number of Sounds
500
Favorite
64 (Includes 32 preloads)
* The actual polyphony will vary depending on the synthesis engines and effects being used.
* KORG’s proprietary system dynamically allocates voice processing power between synth engines as necessary.
The quoted maximum numbers of voices apply when 100% of the voice processing power is devoted to a single engine.

Effect

Insert Effect for Sound Programs
3-band EQ and four insert effects.
Reverb/Delay Section
REVERB/DELAY button, Type selection knob, DEPTH knob, TIME-TAP button Select 1 from Reverb type (HALL, STAGE, ROOM, SPRING), Delay type (DELAY, CROSS, TAPE, MOD DLY). DEPTH, TIME (Tap) parameter, user-editable
Equalizer Section
EQUALIZER button, LOW, MID, HIGH slider (3 band Equalizer)

Demo Songs

16

Panel Interface

FAVORITE
64 (A–H: 8, 1–8: 8), WRITE button
KEYBOARDS
Category selection knob, Display (128 x 64 dots), LEVEL knob, VARIATION knob, EDIT button
ENSEMBLE
Category selection knob, Display (128 x 64 dots), LEVEL knob, VARIATION knob, EDIT button
Dynamics Section
DYNAMICS button, DYNAMICS knob
Controls how the volume and sound respond to changes in keyboard touch.
Other
SPLIT button, SWAP button, EXIT (PANEL LOCK) button, SYSTEM button, TRANSPOSE button, DEMO (SYSTEM button + TRANSPOSE button)

Controllers

Realtime Controller
Pitch bend wheel, Modulation wheel, SW1 button, SW2 button
Master Volume
MASTER VOLUME knob

Principal Specifications

Frequency Response
20 Hz–22 kHz: +/-1.0 dB, 10 k ohm load
THD+N
20 Hz–22 kHz: 0.005%, 10 k ohm load
S/N Ratio
105 dB, 10 k ohm load

Audio Output

Audio Output (Left/Right): XLR
Connector: XLR-3-32 type (balanced)
Output Impedance: 600 ohm
Maximum Level: +16 dBu
Load Impedance: 10 k ohm
LIFT - GND switch
Audio Output (L/Mono, R): phone
Connector: 6.3 mm TS phone jacks (unbalanced)
Output Impedance: 1.1 k ohm stereo; 600 ohm mono (L/Mono only)
Maximum Level: +16 dBu
Load Impedance: 10 k ohm
Headphones
Connector: 6.3 mm stereo phone jack
Output Impedance: 50 ohm
Maximum level: 150 mW + 150 mW @32 ohm

General

Foot Controllers
DAMPER (half-pedaling supported), SWITCH, PEDAL
MIDI
IN, OUT
USB
USB A (TYPE A) x1: For connecting USB storage media
USB B (TYPE B) x1: USB-MIDI Interface
Power Supply
AC Power Supply terminal, Power button
Dimensions (W x D x H)
88-key: 1311 mm x 359 mm x 140 mm / 51.64" x 14.13" x 5.51" (excluding music stand)
73-key: 1099 mm x 359 mm x 140 mm / 43.27" x 14.13" x 5.51" (excluding music stand)
Weight
88-key: 20.0 kg / 44.09 lbs (excluding music stand)
73-key: 17.0 kg / 37.48 lbs (excluding music stand)
Power Consumption
30 W
Included Items
AC cord, Music stand, Damper pedal (DS-1H)

Accessories

Expression/Volume Pedal
XVP-20
XVP-10
Foot Controller
EXP-2
Pedal Switch
PS-3
PS-1
Hard Case
HC-Grandstage 88 (dedicated hard case for 88 key model)
HC-Grandstage 73 (dedicated hard case for 73 key model)
* All product, company, and standard names are trademarks or registered trademarks of their respective holders.
* Appearance and specifications of products are subject to change without notice.
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