Yamaha PSR-7
From Yamaha Wiki
The Yamaha PSR-7 is a portable musical keyboard produced by the Yamaha Corporation.
Features
- 40 different voices (divided into 2 banks)
- the keyboard is able to play 2 voices at the same time, though they must be from the same bank (Note that this function also halves the maximum polyphony by 2)
- 1 demo song
- memory for 1 user song
- 10 rhythm styles
- 49 keys
- PHONES/OUTPUT jack for headphones or AUX out (anything plugged in disables built-in speaker)
- Powered by six "D" size batteries or external 9-12VDC source