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main features: * 32 mini keys * built-in small speaker (sounds thin and distorting) * theoretically 2 note polyphony, but a chip bug randomly cuts the tone of a held down key when a 2nd is pressed =>only monophonic play is reliably possible. * 8 OBS preset sounds {piano, organ, violin, trumpet, mandolin, bell, music box, guitar} * 8 OBS preset rhythms {slowrock, rock, new new, disco, march, waltz, samba, blues} (no accompaniment, with rhythm only monophonic play) * volume +/- buttons (8 steps) * tempo +/- buttons (22 steps) * 4 drumpad + select button to switch them between drum or animal samples {base, snare, hihat, cymbal | dog, frog, duck, bird} * The 4 channel sound generator synthesizes each main voice sound by layering 2 waveforms those have a digitally switched volume envelope (with well audible ticking zipper noise). The envelopes are rather linear than logarithmic and thus end too soon. The waveforms on both channels are detuned to create a chorus effect. In the demo tunes the 2 subvoices of each main voice sound are split to permit the sound generator to play 4 note polyphonic musics (without chorus). Percussion and effect samples share the same 4 channels. * percussion = boring low- res drum samples {base, snare, hihat, cymbal} * The CPU contains a 1 bit pulse width modulation D/ A converter which outputted sequences of on/ off pulses get turned into analogue wave forms by a capacitor. This sample output frequency intermodulates higher notes and gives them an unusual glassy timbre. * CPU "INOVUS IA 371 PCB952" (22 pin COB module) with DC voltage controllable clock oscillator * simple sequencer (monophonic record/ playback of 38 notes or drum pad events, no edit, quite useless because contents is erased as soon anything else but "play" is pressed). * auto power- off * 6 wonderful orchestrated polyphonic demo melodies