Just like the MT-68, this device, too, holds the NEC D 930 G auto accompaniment CPU chip, with the exception of the 4 arpeggio variations, which haven't been built in (could be activated subsequently, though -> easteregg).
Oddly enough, the drum circuits are only partly analog (HH), mainly consisting of rather good, dynamic PCM samples. The bass sound is very voluminous and warm and the chord sounds strongly resemble those of the MT-68. All in all, the otherwise identical patterns sound much more dynamic than on the MT-68, due to the other drum circuits.
Modifications up to now:
- Mute switch for bass and chords
- Mute switch for HH and BD with drum variation
- Additional "tempo fine" controller