The SR99 is a compact (150mm x 130mm) programmable
analogue drum machine. The unit has just for sounds, bass drum, snare
drum, hi-hat and cymbal. Four time signatures are provided, 4/4, 3/4, 5/4,
and 7/4. Despite its unassuming dimensions, the SR99 is capable of quite
flexible programming with up to 256 bars of different rhythms.
The one shortfall is really the lack of a clock input
facility, so unless you want to slave your whole system of this little beastie
it's sample and loop time.