Korg SV1-73 Stage Piano Keyboard 73 Keys AS-IS Amp switch is malfunctioning.

Korg SV1-73 keys Stage Synthesizer electronic piano

Korg SV-1 73 Key Stage Vintage Piano Black with Damper Pedal and Power Cable

Korg SV-1 73-Key Stage Vintage Piano Metallic Black and Red Keyboard 73

Korg SV1 88-Key Stage Vintage Digital Piano Keyboard

NORD Electro 2 73. Red. Used but in great condition

Korg Krome 73-Key Keyboard Synthesizer Music Workstation

Korg Krome 61-Key Music Workstation Keyboard Synthesizer with Stand & Cable