Model B recall
Since the advent of the Model A-31, demand for Model B obviously, has disappeared. The antique components, and its inherent problems simply make Model B too expensive for most users.
The main problem with an authentic device is that is has no automated functions. Everything has to be tuned manually. Look at this old Rife machine.
The user must hold still, while one therapist or technician holds the rods on the persons body. Another tech controls amplitude and frequency.
Original Rife Frequency Instrument
When modern electrode patches were invented, it became possible for the user to control the machine by themselves.
But it is often quite difficult, even with stick-on patches, to tune the machine continuously, while applying to an area. For this reason, and because the correct frequencies for any given situation can be brought into dispute, there were some avoidable failures.
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JWLABS Model B