Yamaha MD4S owner manual Front panel, Midi IN, OUT, Thru connectors, Phones jack, Punch I/O jack

24 Welcome to the MD4S

H MIDI IN, OUT, THRU connectors

These connectors are used to exchange MIDI messages with external MIDI devices.
MIDI OUT connector	MIDI Clock and MIDI Time Code (MTC) is output from this
	connector. This is used when synchronizing the MD4S with a
	MIDI sequencer or rhythm machine.
MIDI IN connector	MTC or MMC (MIDI Machine Control) is received at this
	connector. This is used when controlling the transport of the
	MD4S from an external MIDI sequencer.
MIDI THRU connector	MIDI messages received at the MIDI IN connector are
	retransmitted without change from this connector to another
	external MIDI device.
Front panel
A PHONES jack
A pair of stereo headphones can be connected here for
monitoring. This jack will output the same signal as the
MONITOR OUT jacks.
B PUNCH I/O jack
A Yamaha FC5 (sold separately) can be connected here,
		1	2

allowing you to use a foot switch to start/pause playback, start/pause rehearsal, or punch-in/out. (See “Using a Foot switch” on page 89 for more information.)

—Owner’s Manual