OneAdaptr STACK Modular Surge Protector Review

One thing you can never have enough of is outlet space in your home or office, and for that, you can buy a power strip, or even better, a surge protector power strip. If you look on Amazon, you’ll see that there are tons of surge protector power strips available, but none are quite like the OneAdaptr STACK Modular Surge Protector series.

OneAdaptr STACK Modular Surge Protector Review

One of the things that I’ve always disliked about most surge protector power strips is that the outlet plugs are so close together that all it takes is one fat power plug to take away one of the available outlets. A better-designed power strip will have plenty of space in between the outlet plugs; the worst ones are the power strips that have a row of outlets going straight down the middle; sure they’re great if every plug you use is a simple two or three prong, but so many electronics come with their own built-in surge protection, and these cause spacing problems when they aren’t plugged directly into a wall.

So before we cover any of its other properties, let’s take a moment to admire the OneAdaptr STACK design: four or six nicely spaced outlets aimed to the side of the power strip versus running down the middle. Each square on the STACK Modular Surge Protector measures 2.4″, which gives you plenty of room to put a fat power cable next to a skinny one, or even a couple of fat ones next to each other.

But wait, there’s more!

As the name implies, the STACK is modular, which means that if you need it to work with more than just grounded power plugs, you can make that happen.

OneAdaptr STACK Modular Surge Protector Review

Each OneAdaptr STACK Modular Surge Protector features:

• 6 or 4 North American ISA AC Outlets
• On / Off Switch
• Built-in Surge Protection
• Built-in Circuit Breaker
• Detachable Design Allowing Future Upgrade
• A Wide Range Of Accessories Available
• Worldwide Patented Modular Design And Interchangeable Color Cap For Extended Customization

Available in a basic configuration of either 4 or 6, the gray and white plastic STACK Modular Surge Protector has a trick: on the 4 outlet version, the last plug port will pull off allowing for expansion. On the 6 outlet version, the strip separates in the middle; after the first three power outlets, you can separate off the last three.

STACK uses a special four-prong design to lock the modules into each other and deliver protected power throughout the strip.

Any why might you want to do that? So you can add in one or more of these: the STACK Telephone and Network Surge Protection Module, the STACK Extension Module (with 3 extra outlets), and the STACK Dual USB 3.4A Charging Module.

OneAdaptr STACK Modular Surge Protector Review

Each of these modules comes in its own distinct primary color combination, and they are designed to plug right into the middle space created when you pull the end module off your 4 or 6 outlet surge protector.

OneAdaptr STACK Modular Surge Protector Review

All you have to do is remove the end module from the power strip, plug the new module in, and then plug the end module back onto the strip.

The modules are held together with a simple locking system; pressing the tab in the lock with a screwdriver or other strong pointy device will unlock the modules from each other.

OneAdaptr STACK Modular Surge Protector Review

This started out as the four-outlet STACK Modular Surge Protector, but now it also has two USB slots, two RJ-11 or RJ-45 telephone or network plugs, three extra plug outlets for a total of seven. Pretty nifty, right?

OneAdaptr STACK Modular Surge Protector Review

This is a total of five powercubic modules plugged in together.

Technical Specifications
AC Cable Length: 1 Meter / 3.28 Feet
Input Power: 110Vac 60Hz
Output Socket: 6 x US Socket
On / Off Switch: Yes
Circuit Breaker Protection: ISA
Max Surging Voltage: 395V
Max Surging Current: 4500A
Max Surging Joules: 525J
MOV: 140241K / 3PC (L-N, N-G, G-L)

OneAdaptr says that you shouldn’t plug more than six powercubic modules together; my example above shows five, so you can see that six may be a limit, but it is one that you can work with.

OneAdaptr STACK Modular Surge Protector Review

The backs of all of the major components have mounting slots if you prefer your power strip not lie on the floor.

OneAdaptr STACK Modular Surge Protector Review

If you have a lot of irregularly shaped plugs, and if you want a power strip that not only protects the items that are plugged in but will also adapt for whatever specific items you need to power while enjoying that protection, you’ll want to take a look at the OneAdaptr STACK Modular Surge Protection System.

The 6 Outlet OneAdaptr STACK Modular Surge Protector retails for $29.99, the 4 Outlet OneAdaptr STACK Modular Surge Protector retails for $24.99, and other components range in price from $9.99 to $19.99. All are available directly from the manufacturer and from other retailers.

Source: Manufacturer supplied review sample

What I Like: Widely spaced outlets that can handle even the largest power plugs; You can insert slots for USB charging, phone and network connections, and extra power spots; Holes on the backs of larger components allow mounting; Surge protection for up to six powercubic modules connected together

What Needs Improvement: The primary colors might be a bit jarring in the wrong environment

As an Amazon Associate, we earn from qualifying purchases. If you are shopping on Amazon anyway, buying from our links gives Gear Diary a small commission.

About the Author

Judie Lipsett Stanford
Judie is the co-owner and Editor-in-Chief of Gear Diary, which she founded in September 2006. She started in 1999 writing software reviews at the now-defunct; from mid-2000 through 2006, she wrote hardware reviews for and co-edited at The Gadgeteer. A recipient of the Sigma Kappa Colby Award for Technology, Judie is best known for her device-agnostic approach, deep-dive reviews, and enjoyment of exploring the latest tech, gadgets, and gear.