Vintage Casio Casiotone MT-68 Synthesizer 1983 Made in Japan, Excellent Specimen

Description

Vintage Casio Casiotone MT-68 Synthesizer 1983 Made in Japan
An excellent vintage 1983 specimen! All knobs, buttons, and sliders intact and fully functional. Clean battery compartment and contacts, no battery corrosion. Battery door intact and included. Batteries not included, of course, but comes with a 7.5V power supply (generic). Create your next lo-fi retro synth masterpiece.
The MT-68 is powered NEC D930G and D931G chips. The same voice chip as the coveted Casio CT-410V synth. It can be considered an upgraded version of the Casio MT-100.
Specifications
Year Released: 1983
Keyboard: 49 mini keys
ROM: 20 Voices
12 rhythms
Shares the same voice chip as the Casio CT-410V synth and MT-800
Effects: vibrato, delayed vibrato, sustain, reverb
Power Consumption: 2 watts
Dimensions: 25” x 7.5” x 3”
Weight: 5.7 lbs
This keyboard has built-in 1-watt mono speaker(s).
Batteries: D x 5 (Batteries not included, but power supply is included)
features:
* 49 midsize keys
* built-in speaker
* 8 note polyphony (only 4 notes with accompaniment)
* Wave shaping synth style filter OBS switches
* separate knobs for main and rhythm + accompaniment volume
* tempo knob
* 10 semi- OBS preset rhythms {rock 1, disco, swing, samba, beguine | rock 2, march, waltz, bossanova, tango} selected by a 5-step slider + switch
* 20 preset sounds: Organ, pipe organ, clarinet, flute, trumpet, horn, piano, oboe, accordian, violin, cello, piano, electric piano, harpsichord, vibraphone, cosmic tone, celesta, harp, mandolin, electric guitar, funny. Selected by 10 OBS buttons + "select" button
* "casio chord" switch {off, fingered, on}
* "accomp. select" switch {rhythmic, arpeggio}
* chord memory switch (chords stay held after releasing key when on)
* "octave down" switch (transposes main voice 1 octave down, works only in chord mode).
* rhythm "intro/ fill-in" and synchro buttons
* sustain switch
* vibrato switch {off, on, delayed
* 2 "one key play" buttons (to step note by note
* CPU "NEC D7802G 038, 8319EX" (64 pins with strange zigzag layout) which outputs trigger pulses for external analogue drums and controls 2 soundchips "HD43517, 3G 43" (42 pins) those output timbres based on 2 mixed digital sine(?) wave tones with different digital envelopes.
* analogue percussion {base, snare, open cymbal, close cymbal, woodblock} which uses transistor noise for cymbal and snare
* tuning knob
* 1/8” headphone and line output jack
advanced options:
https://youtu.be/6scyk8p2Et8