image provided by the synths owner, Sascha Kranz of Berlin, Germany
The Casio PT-1 is is believed to be a smaller version of the Casio VL-tone. It is a small monophone keyboard with 4 sounds: piano, fantas, violin, and flute as well as
10 rhythms: march, waltz, 4 beat, swing, rock1, rock2, bossa nova, samba, rhumba, beguine.
You can record up to 100 notes. On the back there is a tuning knob where you can alter the pitch of the whole instruments (the rhythms go faster or slower, as well).
The rhythm ROCK1 is used by TRIO in the Song DADADA (although it could have been a Casio VL-tone).
You can play it via 4accus(walkman-style) or DC6V.
There is a small speaker on the left and a little out.
It's as high as hd disk. about 9cm (sorry don't know the inches) .
-Sascha Kranz of Berlin, Germany
We are still researching the Casio PT-1
[If anyone has any further information about this instrument or any Casio instruments, please let us know.]