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The Super Prologue 21 is built very similarly to the Prologue 21, but has slightly different components - the Amplifier (), Commander (SKC-1000) and Wireless Microphone Receiver (SKN-5246) return with new features, though the Changer appears to be identical to the original Prologue 21.
|Sega-related karaoke equipment/Sega Kara|
|Prologue 21 (199x) | Super Prologue 21 (199x) | Video Karaoke (200x) | Candoone (200x)|
|Mega-CD Karaoke (1992) | MKU-1 (1995) | Dreamcast Karaoke (2001)|
|Sega Kara (2001) | Sega Kara for PC (200x) | Sega Kara (mobile) (2011)|