GS173 Grandstage Professional 73-Key Stage Piano


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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 and an included 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.

73-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): 1099 mm x 359 mm x 140 mm / 43.27" x 14.13" x 5.51" (excluding music stand) 

Weight: 17.0 kg / 37.48 lbs (excluding music stand) 

Power Consumption: 30 W 

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

More Information
Price $2,699.99
Vendor Item Number GS173
Special Order 1
Coming Qty 0
Manufacturer Korg
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