The Basic systems comes only with the manual mode setting. Amplitude control is available on the Basic systems as well.The pricing is more affordable and competitive. There are no sleep programs in the Basic systems. You can opt for different frequencies on the manual mode; some of the popular ones are 2.4, 3.2, 4.8 or normally 9.6 Hz. The reason we introduced this is because we find that we mostly use the manual mode more often rather than the sleep modes. We recommend 9.6 Hz or sub-harmonics (4.8, 3.2 or 2.4 Hz) set on the manual mode for sleep use where 9.6 Hz is too fast for user.
See our article – Why 9.6 Hz to know more.
But for someone with chronic sleep problems or insomnia we would recommend them to go for the v.5 system that comes with all the sleep modes rather than the Basic.