53 Note display
54 ‘LESSON 123 / L/R’
Learning mode display for left and right hand
55 ‘TEMPO’
Tempo display
56 ‘MEMORY / LOCK Q.S.’
Memory location display 1 to 4 and Quick Settings
57 ‘LAYER / SPLIT / HARMONY / ARP / DSP’
Display of layer mode, split mode, harmony mode, arpeggio mode and DSP
58 LED [ALBUM]
Lights up when an album is selected
59 LED [TOUCH]
Lights up when the velocity sensitivity is being adjusted
60 LED [SUSTAIN]
Lights up when a Sustain pedal is connected
61 LED [MIX CTRL ]
Lights up when Mix mode is activated
62 [SD]
Slot for SD cards with up to 128 GB capacity
63
USB interface to connect a computer
64 [SUSTAIN]
Connection socket for the Sustain pedal
65 [PHONES]
Output socket for headphones, designed as a ¼" jack socket
Rear panel connections
Connections and operating elements
MK-400
17