The MT-100 can be powered with batteries or with an AD-1 power adapter (7.5 volt, negative tip). Its sound engine is very similar to the MT-68. It is powered by an NEC D931 chip.
Keyboard: 49 mini keys
Polyphony: 8 notes
ROM: 20 instruments, 12 rhythms, 6 drum sounds
Outputs: headphone jack, mono RCA line out
Power Consumption: 3 watts
Dimensions: 633 mm x 188 mm x 62 mm
Weight: 2.6 kg (with batteries)
This keyboard has built-in 1-watt mono speaker(s).
Batteries: D x 5