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General| Brand | Yamaha |
|---|---|
| Model | PortaTone PSR-31 |
| Number of Keys | 49 |
| Auto Accompaniment | Yes |
| Built-in Speaker | Yes |
| Polyphony | 8 |
| Connections | Headphones |
How to correctly install batteries for instrument power.
Details on using external power adapters for the instrument.
Explains the automatic chord and bass accompaniment feature.
How to add harmonizing notes to melodies using the DUET function.
Guide to creating custom drum patterns using the Custom Drummer feature.
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