E DUAL and SPLITDUAL and SPLIT modes allow you to combine two tones.DUAL MODE: You can combine two tones in a layer with this mode, creatingsounds and effects impossible with just a single tone.SPLIT MODE: in this mode it is possible to divide the keyboard at the SPLIT POINTinto upper and lower halves, each with a different tone, for ensembleplay.A. DUAL operationSimultaneously press two TONE SELECTOR buttons to achieve tone colors at once.<Example>%& Pressing such a combination also halves the number of simultaneousvoices available to sixteen (16 note polyphonic).* Pressing another pair changes the combination.* To cancel and return to normal operation, press a single tone selectorbutton.B. SPLIT operation (CA840 & CA640 only)Press the SPLIT button so that the LED above it lights.DLETA

Kawai CA840 Owner's Manual