Many new e-stim users will say they feel "pain" when trying to use their e-stim equipment for the first time. This is because you have been brainwashed into believing that ANY electrical sensation is to be interpreted as "pain" when in fact the sensation would be more of a tingling sensation at worst.
I read a lot of post where new users complain that they are frustrated in their inability to find pleasure from e-stim.They spent all this money on equipment and want to enjoy it but find it impossible.
Here's my advice... And mind you, it took me a long time to enjoy my e-stim equipment. I have a P.E.S. Powerbox so most of this will describe how to set the powerbox settings to the proper level for enjoyment.
The key to enjoying e-stim is to first become accustom to the sensations at a low level. If you can get past the initial uncomfortable feeling and learn to relax and just allow the sensations to flow you will quickly realize that your penis will like what it feels...even if you don't but trust me, your penis will convince you to give in eventually and have a good time.
Attach your electrodes, then set the Power setting to ZERO (The lowest setting). The PULSE setting to 10, the FINE TUNING adjustment to somewhere in the middle, the FREQUENCY to ZERO (or the lowest setting).
Now turn the power on, you should not feel anything since the power is on the lowest setting. Now SLOWLY turn the Power knob to 1. Do you feel anything? Probably not so turn it slowly to 2, then 3 until you JUST BARELY feel something... Once you feel even the slightest sensation just leave it there and allow your body to get use to the sensation. You may not be erect, that's fine just let the sensations flow into your penis. Now adjust the power slowly to level 4, notice the difference in sensations. At this point adjust the pulse rate down a little to say level 7 or 8 so you get a nice quick pulsing sensation. Now adjust the power up slowly to level 5 or 6 and leave it alone.
The key is you have to LEAVE IT at one setting for about 5-10 minutes for your body to get use to it and start to enjoy it. If you mess with the setting too fast or too often it confuses your body and causes it to react with PAIN.
Just leave it at one setting and after about 10-15 minutes you can SLIGHTLY adjust the power up a little more... Give it a try and see what happens.