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Please note: On my example, pictured above, the chord switch knob to
the far left-hand end of the control panel is not original. It should
be grey with a white horizontal stripe, the same as the two switches
near the ROM-Pack slot.
looks to be very similar in specification to the MT-800, but
apparently it sounds very different and has
built-in speakers instead of the MT-800's separate detachable speakers.
This makes for a more compact, portable unit, but the small built-in
speakers tend to over-emphasise the rhythm percussion sounds.
Fortunately, both headphone and stereo aux outputs are provided on the
The MT-820 has a 4-octave, small-key keyboard, and a selection of 12
voices and 12 rhythms with auto accompaniment (as usual, dubbed "Casio
Chord"), with a fill-in function, together with a rudimentary recording
function. Chord changes are effected using the
left-hand part of the keyboard as usual, and can be selected either
using single-finger or fingered mode. The keyboard is 8-note
polyphonic, but this drops to 4-note when the auto accompaniment is
While the only stereo effect comes from the "Stereo Chorus" function,
this does lend a much richer and fuller sound to the voices.
All the usual ROM-Pack features are present, complete with the key
LEDs, but as well as the usual "Melody Guide" system, the MT-820 also
features "Chord Guide" to train you how to play the chords along with
the melody. LEDs above the left-hand part of the keyboard light to
indicate chord fingering, as shown in the picture above.
My example was purchased from an eBay seller in the USA. I do not know
if this model was ever sold in the UK.
The MT-820 plays ROM Pack music very nicely, but to my ears, the rhythm
sounds are too loud and overpower the music.There is no way to turn the
rhythm down without also turning down the accompaniment volume as well,
and the problem is exacerbated by the built-in speakers, which
emphasise the percussion sounds even more. This is a real shame,
because this keyboard would sound lovely with the rhythm sounds backed
Chitty Bang Bang
(from RO-352) - 2m11s, MP3, 4MB.
Sorry, I do not have an instruction manual for this keyboard.