Editing Sound module (section)

==User interface==
[[File:Roland SH32 - Product Photography.jpg|thumb|right|400px|Roland SH-32]]

The front of a rackmount sound module, or the top for tabletop units, typically contains a small screen or panel to provide information to the user. An LCD panel or an LED alphanumeric display may be supplemented with LED indicators to show the status of various features. In some models, LED indicators are embedded within a translucent button, so pressing the button shows its status on the button. There is usually a volume control, some types of buttons or knobs for selecting sounds and changing settings, and a power button. The front panel may also have a headphone jack, USB port, or another port for making connections. The smallest, simplest piano modules may have only a volume knob and a knob to select different piano sounds. The most complex synth modules may have a large number of knobs, buttons, and faders to control oscillators, filters, and amplitude settings.

The rear panel usually contains 1/4 inch left and right audio outputs and one or more 5-pin MIDI inputs. Some units may have MIDI thru connections, which can be used to chain devices. Starting in the 2010s, some modules have one or two USB connections and can be connected to a computer (laptop, tablet, etc.), to allow the user to use editing software to make advanced changes to settings or sounds.