The Mark Pro TWOi is tuned to equal temparament by default. It is 
the most common piano tuning with 12 tones in an octave divided 
equally. But there are also other ways to tune for different intona-
tions. The Mark-Pro TWOi supports six intonations. 
Press the Global button then press the  Intonation  button. You 
will see In1 on the display which stands for Intonation 1. 
Press +/Yes or -/No  to change it up to In6. 
See page 36 for the intonation list. 
You can connect the Mark-Pro TWOi to external MIDI devices in 2 
ways: 1) with MIDI in/out on the rear panel, and 2) with USB. If you 
want to do it in the first way, using MIDI in/out, you need to set USB 
off. On the contrary, when you do it in the second way, using USB, 
you need to set USB on. 
Press  the  Global  button  then  press  the  USB  button.  “Uon” 
appears on the display,  meaning USB is on. 
Press -/No or +/Yes to switch it to off.
This setting is  not important when using the  Mark-Pro TWOi 
alone not connected to external devices. 
Global
Intonation
    / No
/ Yes
+
-
USB 
Global
Tune
    / No
/ Yes
+
-
~
~
Global
Intonation