Paula,
 
I have the Master and Marvel antique Violet Ray machines as well as the Chinese 
facial/costmetic one.
 
The Chinese machine as well as its electrodes are far weaker than the antique 
ones.  It is only good for cosmetic use.
 
The antique machines purchased from ebay have helped me with getting rid of 
inflammations, eye pressure,  burning- numb feeling on my thigh and pinky toe.  
I also used it for toothaches, tonsilitis, sinusitis, tongue, spine, etc., with 
all the proper electrodes.  Each electrode is different from the other when it 
comes to deliver the frequency-electricty.  The condenser electrode i believe 
delivers most punch specially when pulsing up and down the skin, the farther 
away from the skin the sharper the frequency. When i run the electrodes on my 
husband and accidentally touch some part of his body by accident, i feel a 
sharp electric as well.   I find the antique ones more desireable for treatment.
 
As an example on the difference of the two.  The highest setting of the Chinese 
is only the low-medium setting of the antique ones.
 
Take precaution when using the machine.  Not in bathrooms, due to grounds, and 
i never use it when there is any water near me, not even a cup, since an 
accident might electrocute me.  
 
 
Melly