Korg GS188 Grandstage Professional 88-Key Stage Piano - Long & McQuade Music Educator Site
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Korg GS188 Grandstage Professional 88-Key Stage Piano

Departments > Keyboards > Digital Pianos > Digital Pianos - Stage > Korg > GS188 Grandstage Professional 88-Key Stage Piano
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SKU: # 510610
Model: #


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The all-new Grandstage combines the best sounds Korg has to offer with a straightforward interface designed for fast performance. With five legendary grand pianos plus an all-new upright, five powerful Kronos engines and two all-new organ engines, Korg's best graded hammer action, damper pedal and music rest, Grandstage delivers an incredible and complete playing experience unlike any other Stage Piano.


  • Sound engines that deliver the utmost in stage sound perfection.

  • A user interface designed for playability on stage.

  • Reverb and delay that are easy to control.

  • Dynamics knob lets you instantly control the sound's crispness and expressivity.

  • Favourite buttons let you instantly recall the sound you want.

  • Smooth sound transition creates a natural-feeling change when you switch sounds.

  • Three-band equalizer lets you shape your sound.

  • Layer/split capability lets you easily combine sounds.

  • Panel lock prevents unintended operation.

  • RH3 keyboard responds to even the subtlest nuances of your playing.

  • Design that combines both elegance and individuality.

  • Music rest and pedal are included.

  • Made in Japan Premium Japanese Quality.


88-key: RH3 (Real Weighted Hammer Action 3), E1E7, 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

Favourites: 64 (Includes 32 preloads)


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


Realtime Controller: Pitch bend wheel, Modulation wheel, SW1 button, SW2 button

Master Volume: MASTER VOLUME knob

Principal Specifications

Frequency Response: 20 Hz22 kHz: +/-1.0 dB, 10 k ohm load
THD+N: 20 Hz22 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

Connector: 6.3 mm stereo phone jack
Output Impedance: 50 ohm
Maximum level: 150 mW + 150 mW @32 ohm


Foot Controllers: DAMPER (half-pedaling supported), SWITCH, PEDAL
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) : 1311 mm x 359 mm x 140 mm / 51.64" x 14.13" x 5.51" (excluding music stand)

Weight: 20.0 kg / 44.09 lbs (excluding music stand)

Power Consumption: 30 W

Included Items: AC cord, Music rest, Damper pedal (DS-1H)
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