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Personally tested, works great, no battery area corrosion.

Runs off of 5 "D" Batteries or DC Power Supply (no batteries or power supply included).

If you would like a power supply compatible with the keyboard specs, message me and we can add one for $25.


Casio MT-45 - pretty analogue keyboard with arpeggio accompaniment

This beautiful white Casio keyboard has wonderful warm analogue sounds, arpeggio accompaniment and the same unique, dark and sonorously droning squarewave bass tones like the "organ" sound of the Hing-Hon EK-001.

Despite its age, the control panel design with its blue lines, pastel coloured softline shaped knobs and switches looks still noble and modern and resembles a bit the "Aqua" user interface theme of Apple Macintosh computers. This instrument was also released as Casio MT-46 with red and less pretty control panel ornaments.

main features:

  • 49 midsize keys
  • 8 note polyphony (but left keyboard section stays always in manual bass/ chord mode, thus only 31 keys usable for main voice)
  • 4 note polyphony in chord section
  • separate knobs for main and rhythm + accompaniment volume
  • tempo knob
  • 8 preset rhythms {pops, disco, 16beat, swing | samba, beguine, tango, waltz} selected by a 4-step slider + switch
  • 8 preset sounds {piano, elec. piano, organ, pipe organ | harp, accordion, clarinet, violin} selected by a 4-step slider + switch
  • mode switch {manual bass, fingered, casio chord}
  • switch for 2 bass timbres (squarewave based)
  • arpeggio switch
  • chord memory switch (chords stay held after releasing key when on)
  • rhythm fill-in and synchro button
  • vibrato and sustain switch
  • main voice CPU "HD44140, 3A 43" (56 pin SMD) with timbres based on multipulse squarewave tones with different digital envelopes, those are differently low pass filtered through capacitors. It makes very warm and pleasant timbres, but envelope release phase is truncated too soon, which makes piano- like tones less natural.
  • accompaniment CPU "NEC D930G  011, 8434XK" (80 pin SMD) which produces different multipulse squarewave tones (partly with capacitor envelope) and trigger pulses for external analogue drums. (For technical details about this chip see CT-410V.)
  • analogue percussion {base, snare, open cymbal, close cymbal, woodblock} which apparently uses no transistor noise. The cymbal timbre sounds half- way metallic and resembles the one of Yamaha PS-2, thus it may be mixed from 2 shift register feedback noises.
  • headphone and cinch output jacks

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Listed2 months ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.learn more
  • MT-45 Casiotone 49-Key Synthesizer
  • White
  • 1980s
Made In
  • Japan
Number of Keys
  • 49 Keys
Keyboard Action
  • Synth Action
Key Size
  • Mini
  • 8 Voices
Analog / Digital
  • Digital

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Swayze Sound Design

West Chester, PA, United States
Joined Reverb:2022

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