E-Stim Systems – Rimba Adapter – 3.5 mm Socket to 2.5 mm Plug

A Rimba power box and an E-Stim electrode can work perfectly well together—until their plugs come into contact. The E-Stim Systems E-Stim to Rimba Adapter solves exactly that problem. This compact adapter features a 2.5 mm plugfor connecting to a compatible Rimba powerbox and a 3.5 mm socket that fits the fixed 3.5 mm jack plug of a compatible electrode.
This makes the adapter a practical bridge between two different connection standards. It’s especially handy for E-Stim Systems electrodes with a fixed 3.5 mm cable: you don’t have to replace the electrode, and you don’t need a complicated collection of adapter cables. Just plug in the adapter, check the connection, and your existing equipment suddenly gains significantly more possibilities.

From E-Stim 3.5 mm to Rimba 2.5 mm

With adapters, the direction is at least as important as the diameter. This version is designed for a very specific situation: You insert the 3.5 mm plug from the electrode into the adapter. Then, the 2.5 mm plug from the adapter goes into the compatible Rimba power box.

• On the electrode side: 3.5 mm jack plug
• Adapter input: 3.5 mm socket
• Adapter output: 2.5 mm plug
• On the power box side: 2.5 mm socket

The adapter does not alter the electrical signal and does not add any programs, channels, or extra power. It simply provides the physical connection between two different jack sizes.

Designed for Rimba power boxes

Rimba uses a 2.5 mm output connector on various e-stim control units, while E-Stim Systems uses a 3.5 mm connector as standard for its own power boxes.
That difference of just one millimeter sounds almost comically small, but for a plug, it’s enough to completely prevent compatibility. With this adapter, you can use a standard 3.5 mm electrode with a 2.5 mm Rimba output.
In its own connection guide, E-Stim Systems lists not only Rimba but also the DG-Labs Coyote 2 and Coyote 3 as power boxes with 2.5 mm sockets. When using equipment from other brands, always check the actual connector size first.

Useful for electrodes with a fixed 3.5 mm cable

The adapter is particularly useful for electrodes where the connection cable is permanently attached to the product. E-Stim Systems refers to this as a captive cable.
With such an electrode, you cannot simply replace the cable with one that has a different plug. If it has a fixed 3.5 mm plug and your powerbox has a 2.5 mm socket, there is literally a size difference between what you need and what you have.
This adapter bridges that gap without requiring you to tinker with the cables.

Not intended for 4 mm electrodes

This E-Stim to Rimba Adapter should not be confused with a cable for electrodes with 4 mm sockets. Many premium insertable electrodes from E-Stim Systems use two separate 4 mm connectors.
If you want to connect such an E-Stim electrode directly to a Rimba powerbox with a 2.5 mm output, E-Stim Systems offers a different solution: a special 2.5 mm to 4 mm cable.
This adapter is specifically designed for products that end in a 3.5 mm jack plug.

Also, don’t confuse it with the reverse adapter

E-Stim Systems also sells an adapter that looks almost identical in function but works in exactly the opposite direction electrically.
Do you have a Rimba electrode with a fixed 2.5 mm plug and want to connect it to an E-Stim Systems powerbox with a 3.5 mm socket? Then you’ll need the 2.5 mm socket to 3.5 mm plug adapter.
This version does the opposite: it’s designed to connect an electrode with a 3.5 mm plug to a powerbox with a 2.5 mm socket.
A difference that seems minuscule on paper but becomes quite important when placing an order. Even with a lot of enthusiasm, trying to use an adapter backward simply won’t work.

Check both connectors first

Before purchasing, check the connectors on both the power box and the electrode. Don’t rely solely on the brand. Manufacturers may use different connectors within their product lines, and specifications can change over the years.
For this adapter, the combination must be as follows: 2.5 mm socket on the power box and 3.5 mm plug on the electrode.
If this matches your equipment, this adapter offers a particularly simple solution without requiring you to purchase a different electrode.

Connecting Safely

Always turn off the power box before connecting an electrode or adapter. Insert the 3.5 mm jack plug fully into the adapter, and then securely insert the 2.5 mm plug into the power box.
Set the intensity to the lowest setting before turning on the device, then increase it slowly. An adapter only changes the connection; the specifications and safety instructions for the connected power box and electrode still apply.
E-Stim Systems recommends that beginners keep electrical contact points and current paths below the waist. Do not use e-stim around the head and neck, and avoid current paths through the chest area. Do not use electrostimulation during pregnancy, if you have epilepsy, a heart condition, or an electronic implant such as a pacemaker or insulin pump.

General Features

• Brand: E-Stim Systems
• Type: e-stim adapter
• Designed to connect compatible 3.5 mm electrodes to 2.5 mm power boxes
• Electrode side: 3.5 mm socket
• Power box side: 2.5 mm plug
• Compatible with devices featuring a 2.5 mm output socket
• Compatible with electrodes featuring a fixed 3.5 mm jack plug
• Convenient for compatible Rimba power boxes
• E-Stim Systems also lists DG-Labs Coyote 2 and Coyote 3 as 2.5 mm systems
• Passive adapter: does not alter the electrical signal
• Not intended as a 4 mm electrode adapter
• Not intended for 2 mm/TENS connections

FAQ

What is the E-Stim Systems E-Stim to Rimba Adapter—3.5 mm socket to 2.5 mm plug—used for?
You use this adapter when you want to connect a compatible electrode with a fixed 3.5 mm jack plug to a Rimba or other compatible power box with a 2.5 mm output socket. The electrode’s 3.5 mm plug goes into the adapter; the adapter’s 2.5 mm plug goes into the power box.
Can I use the E-Stim Systems E-Stim to Rimba Adapter to connect an E-Stim electrode to a Rimba powerbox?
Yes, provided the E-Stim electrode has a compatible fixed 3.5 mm jack plug and the Rimba powerbox in question uses a 2.5 mm output socket. For E-Stim electrodes with detachable 4 mm sockets, you’ll need a different cable solution.
Can I also use the E-Stim Systems E-Stim to Rimba Adapter to connect a Rimba electrode to an E-Stim powerbox?
Not if the Rimba electrode ends in a 2.5 mm plug. For that, you’ll need the reverse adapter: 2.5 mm socket to 3.5 mm plug. Therefore, always check which plug is on the electrode and which socket is on the powerbox before ordering.
Does the E-Stim Systems E-Stim to Rimba Adapter change the intensity of the E-Stim signal?
No. It’s a passive adapter that simply connects different jack sizes. Programs, intensity, and output signal are determined by the connected powerbox.
With the E-Stim Systems E-Stim to Rimba Adapter, a one-millimeter difference doesn’t have to spell the end of a promising partnership. Check for a 3.5 mm jack on the electrode and a 2.5 mm jack on the power box, and the connection is made in no time. Of course, we’ll ship this handy little problem-solver quickly and in completely discreet packaging.