The MT-40 has a second 15-key mini-bass-button keyboard on the left side that can be used to play monophonic bass lines. It has analog percussion sounds.
It is powered by an NEC D775G CPU and could be considered an upgraded version of the Casio MT-30.
Year Released: 1981
Keyboard: 37 mini keys
Polyphony: 8 notes
ROM: 22 sounds, 1 bass, 6 rhythms
Power Consumption: 3 watts
Dimensions: 584 mm x 178 mm x 61.6 mm
Weight: 2.2 kg
This keyboard has built-in mono speaker(s).
Batteries: 5 x D