Yamaha DX27 EN - Manual (Page 11)

The DX27 comes with 192 different pre-programmed voices in an internal ROM
4. The 192-Voice
(Read Only Memory). These voices can be loaded singly into the DX27’s selectable
PRESET Memory 24-voice memory, or into any location in the DX27 BANK memory.
THE 192 PRESET ROM VOICE
NORMAL MODE VOICES
The PRESET voice can also be accessed directly and played using the PRESET
SEARCH function.
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