Can Optimum Bio Sound Therapy be delivered via a speaker (e.g. directly from the tablet) versus via Earbuds?

Can Optimum Bio Sound Therapy be delivered via a speaker (e.g. directly from the tablet) versus via Earbuds?

Earbuds need to be used in order for the inner ear bones and then the auditory nerve to absorb the full range of our dynamic modulating frequencies, there has to be a complete and direct contact in order for the vibrations to transfer.