It depends on what presets and settings you are using. All the shifters can shift a few octaves up or down, but they can also be set for little or no shift. So, can't answer without more information.
At the risk of stating the obvious, diatonic shifters require you to tell the unit the key in which you are working. Also, you require a good signal level (several green bars on the meters) to get the best results from the shifters.
