Question:
Is the sensation from an electro power play unit similar to that of a TENS unit?
Answer:
Yes it is similar, however the wave form pattern is quite different to a tens unit.
You will find that A specific Electro Stimulation Control Box has longer and deeper curve patterns in the wave forms produced, this makes the stimulation more in tune with the type of items being used and takes into account better, the areas of the body that the items are being used on.
You generally find with TENS units, as they are designed to superficially stimulate muscles and muscle groups, this gives the units a limited scope, as it is a simple thing to cause a slight muscle spasm.
You will also generally find the power levels limited on the TENS units as again not a great deal of power is required to stimulate the muscles.
That said as a rule of thumb the more money spent on a TENS Unit will get you closer to a specific Electro Stimulation Control Box.