Hi Keldare.
I will answer in more detail, maybe you can better imagine what you have to buy.
After many years of Stereo-stim, this is my experience. (Now have an ET312)
There are many factors that influence or determine the feeling.
1. Which signal is used
a. is it a single signal – for 2 electrodes
b. or 2 signals for 3 or 4 electrodes
c. are the signals of the 2 channels different or the same
2. The output voltage or the magnitude of the current
3. The placement of the electrodes
4. Which electrodes are used
5. How many electrodes do you use
6. Do your use contact gel, yes or no
7. Contact gel and conductive pads do not work together again because then the pads will not stick
8. What is the surface area that makes contact with the skin and the electrode
9. What mood you are in yourself
10. How do you react to certain stimuli, every person is different
11. If you are a man, the feeling is very dependent on whether your penis is flaccid or if you have an erection
12. How long are you busy, you get used to it and then the current has to go up again to continue to experience the same feeling
Explanation :
With electrostimulation, current flows from one electrode to the other over/through the skin and/or through the body, triggering the nerve endings.
If you have 1 channel / output, that current can only flow in 1 direction
(For the techies among us, actually there are 2 current directions possible from electrode A to B and vice versa, but I want to keep it simple )
But if you have 2 separate channels with 4 separate electrodes, then you also have 2 current directions, which can sometimes influence each other, depending on where the electrodes are placed and also depending on the signal of both channels.
If you have 2 channels with 3 electrodes, so one common electrode, then the 2 current directions influence each other even more.
And as you will understand, the flow determines the feeling.
In this “post”
viewtopic.php?f=11&t=10131&hilit=nerves you can read how the nerves run in the male genitals.
Contact gel is necessary if you want to ensure good contact between the skin and the electrode. If you do not have good contact, you will get an unpleasant, burning feeling. Then E-stim becomes torment instead of pleasure.
The placement of the electrodes and the signal to be chosen make a big difference. Sometimes you only have a stimulation feeling in your glans. But other times it could be through your entire shaft of the penis.
Or a feeling that you are being stimulated at your perineum. And many combinations are possible.
If you choose a stimulation signal for 2 separate channels and those signals are also different, in terms of phase, frequency, modulation, etc., this results in a very varying feeling and can sometimes be very intense.
My advice is start simple and try to understand what is happening and how it feels.
This way you can continue to expand the number of electrodes and choose more complex signals.
Internal electrodes also give a completely different feeling and there are many possibilities to experiment with external and internal electrodes.
Even if you use external electrodes and you slide a conductive rod into your urethra, the feeling will change instantly, because the current will flow differently, while that conductive rod is not even connected!
My advice is, stay below your waist with your electrodes and experiment safely, separate from the mains voltage.
With devices that work with adapters you have quickly created an unsafe situation without even realizing it, especially with stereo-stim and DIY devices.
What I'm thinking about for placement and purchase of electrodes for a beginner are 3 conductive rubber rings, one on the cock ring place, one on the shaft, close to the scrotum, with taped part from above and one around your glans.
But as you will understand from my story, every person is different and experiences it differently. Even the same person may experience it differently at a different time because of his mood.
I hope my information is of some use to you.
Best regards. Hank.
( Translated with Google translate )