Braxton's quickie for the day...
For new male stimmers out there, I offer advice on one of my perennial email topics: overstimulation of the dorsal nerve in the penis. The dorsal nerve runs top and center for the entire length. Too much stimulation makes it almost impossible to achieve orgasm.
You are subject to this problem anytime you are using multiple electrodes on the penis. The rule of thumb is that you must limit stimulation of the dorsal nerve to one electrode.
This is just one of the many details addressed in Currently Aroused.
Currently Aroused: http://anna-braxtons-store.myshopify.com/pages/our-ebook-currently-aroused