Comparison IK Multimedia iRig Keys vs IK Multimedia iRig Keys 37

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	IK Multimedia iRig Keys	IK Multimedia iRig Keys 37
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Keys	37 шт	37 шт
Key size	small-sized	small-sized
Mechanics	active (dynamic)	active (dynamic)
Control
Pitch controller
Modulation controller
Octave shift
Connections
MIDI out
USB to host (type B)
Connectable pedals	1 шт	1 шт
General
Programming function
Dimensions (WxHxD)	503x40x120 mm	503x40x120 mm
Weight	0.66 kg	0.66 kg
Color
Added to E-Catalog	february 2018	february 2018

MIDI out

A specialized output for transmitting MIDI signals to an external device — a sequencer, a computer sound card (if there is a MIDI In input), etc.

MIDI signals are a kind of "digital notation": they tell which key was pressed, with what force and for how long, and also carry information about various additional parameters: timbre, tempo, key, etc. To convert such signals a "ready" sound requires an external sequencer (software or hardware).

Note that despite its specialized purpose, the MIDI Out output is not mandatory for modern MIDI keyboards: MIDI signals can also be transmitted via other interfaces, such as USB or Bluetooth (see the relevant paragraphs). So it makes sense to specifically look for a keyboard with such a connector if you plan to connect it to equipment with a MIDI In input.