VITOOS AD5S PRO
Review of the VITOOS AD5S PRO guitar pedal power supply.
Introduction:
Finding a proper isolated power supply for your pedalboard is harder than it should be. Truly isolated outputs—where each one is electrically separated and doesn’t share ground—are typically expensive. And the budget market? Let’s just say there are a lot of “creative” marketing tricks. Sometimes, you're just buying a glorified daisy chain in a metal box with some LEDs.
There are exceptions, of course, but they’re few and far between.
What caught my attention about the VITOOS AD5S PRO was its interesting combination of features: five truly isolated power outputs and a surprisingly low price.
I wasn’t familiar with the brand at all, which made me even more curious.
VITOOS?
VITOOS is one of those mystery brands that seem to pop up exclusively on online marketplaces. They’re based in China and, from what I can gather, specialize in affordable accessories for musicians—mostly in the pedalboard and power supply department.
You won’t find them next to your usual guitar pedals PSU brands at your local boutique music store, but they do have an official site, and their product line is surprisingly well-documented. They’ve carved out a solid little niche on platforms like AliExpress.
They also maintain official accounts on most major social media platforms like Facebook and Instagram, which adds a layer of credibility. Their overall online presence is surprisingly consistent and well-presented. I didn’t come across any red flags during my research.
Purchasing, Shipping & Packaging
I ordered my VITOOS AD5S PRO from AliExpress, simply because it was the most convenient option at the time—I had some discounts and coupons to use. They have an official store there, along with listings on other online retailers, so tracking down their gear is fairly easy.
Shipping went exactly as expected. No customs drama, no unexplained delays. The product was sent fairly quickly, and there was no need for extra communication.
Now, let’s talk about the box, this thing came in packaging that puts many high-end brands to shame. It’s one of the nicest boxes I’ve ever seen. Sleek design, clearly labeled compartments, and everything inside was arranged with obsessive precision. Whoever designed this box probably has OCD. I really appreciate such nice commitment to details.
Inside the box, you get:
The power supply itself (Obviously)
1 x AC Cord with 90-degree angled plugs (you can choose plug type for your region)
1 x IEC Adapter
1 x Straight to Right-angled 30cm
5 x Straight to Right-angled 60cm
1 x Straight to Right-angled 90cm
1 x DC Voltage Doubler (2 Straight to 1 Straight male)
1 x DC Current Doubler (2 Right-angled to 1 Straight male)
1 x 9V Battery Clip (Straight male, negative polarity inside)
1 x Polarity Conversion Adapter (Right-angled male to Straight female, 15cm)
4 x Hook & Loop Straps
1 x Cable Locker Set
There’s also a nicely translated English manual, which is always a relief. Clear, easy to follow, and free of the usual “lost in translation” nonsense you sometimes get with Chinese brands.
The only thing missing? Stickers. Come on, VITOOS—free marketing! Give us guitarists something to slap on our cases.
Still, I was genuinely impressed by the care that went into this. At this price point, it felt like unboxing a premium product.
First Impressions & Build Quality
Holding the unit in my hands felt like handling a piece of rugged, military-grade gear. The chassis is thick and sturdy—not the kind of unit that feels fragile or cheaply made. It looks like it could take a serious beating and still work just fine.
The color scheme caught my eye immediately. That deep yellow finish with crisp black labeling looks deliberate—like someone actually cared about the design. It wasn’t the reason I bought it, but I’d be lying if I said it didn’t make me stop and take a closer look.
Everything on the unit feels purposeful. The output layout is clean and logical, and the switches feel solid—not those soft, mushy toggles you worry will break after a few weeks. The labeling is crystal clear, and I even like the font choice. It feels like it was designed by people who really know what they are doing.
One little thing that I noticed, which isn’t really a big deal, is that at the top corners where the chassis is bent (the top and side panels are made from a single piece of metal sheet—pretty cool), there are tiny little gaps. It’s not a major issue—just me nitpicking—but those tiny gaps could let in dust or liquid. Of course, this isn’t waterproof gear, and any spills would more likely get in through the inputs or outputs anyway. I’ve had a few unintended spills on my pedalboard over the years while playing live, so I figured it’s worth pointing out. That said, since I—and I imagine most people—will mount this underneath the pedalboard, it should be fairly well protected, even in the case of unexpected rain at an outdoor gig.
The power supply measures 130 x 88 x 35 mm and weighs around 400g. It’s not huge by any means, but it is a bit chunkier than other PSUs in this price range. That said, it should still fit nicely on most standard-sized pedalboards. If you’re planning to mount it underneath, just make sure your board has enough clearance. Without adjustable feet or built-in extra height, it could be a tight squeeze—or not fit at all. So measure twice, mount once. Plan ahead and check your setup.
Features & Usability
The AD5S PRO is fully isolated—and not just on paper. It uses internal transformer-based isolation and connects straight to the wall with a proper AC power cord. There’s no external AC/DC adapter, which is often a clear giveaway when a unit isn’t truly isolated.
It also features an AC output for daisy-chaining another VITOOS AD unit or their extension module. Both ports are tucked neatly on the side, and the included 90-degree angled power cable is a smart touch for tight pedalboard spaces.
Around the back, you’ll find five fully isolated outputs. They’re all center-negative, which is standard for most guitar pedals, and if you have a pedal or something that uses reverse polarity, the kit includes a handy adapter cable for that too. Each output provides 300mA, which is enough for the majority of pedals out there. For more power-hungry ones, there's also a current doubler cable included that lets you combine two outputs for 600mA.
Now here’s another standout feature: voltage selection switches. Three of the outputs let you switch between 9V and 12V, and the other two go between 9V and 18V. You can even combine voltages if needed, though I won’t go into the more advanced “voltage stacking” stuff here—it’s explained very clearly in the manual if you ever need it. One small detail I want to point out is the type of switches used for voltage selection. Some people might not be fans of these particular small toggle-style switches, as they can occasionally feel a bit stiff or hard to flip—especially if you don’t have long fingernails or if they’re tucked under your board. Personally, I haven’t had any issues with them. They feel solid and responsive enough to me, and given the compact size of the unit, I don’t see a better alternative that would’ve worked here. It’s a fair trade-off, and honestly, once you set your voltages, you’re probably not going to be adjusting them on the fly anyway.
Each output has a status LED—green for normal operation, red for fault. This makes troubleshooting quick and easy, especially during a gig. The unit also includes built-in short circuit and overload protection.
The spacing between the five outputs is tight, so if you're using right-angle plugs there, especially bulky ones, you might have to play around a bit. Still, it’s manageable and not a big problem.
As for the included cables—they're actually really good. They have a thick, flexible insulation and feel much better than the average cheap spaghetti cables you usually get with budget power supplies. That said, they were all a bit too long for my small board, but that’s understandable. Everyone’s pedalboard layout is different, and you can always modify or replace them to fit your needs, like I did by shortening and resoldering a few.
There’s no main power switch on the unit, which might sound like a con, but honestly, it’s not something you usually get on pedalboard PSUs anyway. Plus, with the way these are typically mounted under the board, you wouldn’t be able to reach a switch even if it was there. If turning off the PSU without unplugging it is important to you, you could easily install a simple inline switch on your power cord.
Lastly, after running for a while, the bottom of the unit can get slightly warm—nothing alarming, just a bit of heat from the internal transformer doing its job. The thick metal chassis doubles as a natural heatsink, and it handles the thermal load well. It’s a smart and simple design choice that improves longevity.
Real-World Use
If you’ve read some of my previous posts on the blog, you know I like to keep things simple. My setup includes four pedals: a tuner, noise gate, overdrive, and a delay/reverb unit. With five isolated outputs, this PSU fits my needs perfectly—almost like it was designed for this kind of rig.
If you run more pedals, the five outputs could be a limitation. But with the included splitter cables, you can easily power a few extra low-draw pedals without any trouble. All of my pedals are under 300mA, so I haven’t tested high-current scenarios or voltage stacking. Still, for my setup, this unit has been absolutely solid.
It’s held up in every environment—at home (where the power isn’t great), in rehearsals, and on stage. No hum, no crackle, no interference. Just clean, consistent power.
It’s one of those “set it and forget it” pieces of gear. For the price, I couldn’t ask for more. It blends right into my setup and does exactly what it’s supposed to do—quietly and reliably.
The only remaining test is time. I’ve had it for nearly a year, and it’s still running like new. If that changes, I’ll update this review. But so far, I’m confident this one’s staying on my board for the long haul.
Conclusion
This unit punches well above its weight. It’s sturdy, well-designed, and packed with premium features that you'd usually expect to find only in much more expensive power supplies. True isolation, short-circuit and overload protection, and flexible voltage options? That’s a lot of functionality for a PSU in this price bracket.
For smaller pedalboard setups like mine, it's practically a perfect match. It’s compact, quiet, and has exactly the number of outputs I need. And if you ever need more, you’re not stuck—thanks to the AC output chaining feature, you can easily expand your setup with another unit or with their AD5S LINK extension module. It’s a system that can grow with you, which is something I really appreciate.
Now let’s talk price—because frankly, that’s one of the most impressive parts of the whole deal. You’re getting a true, fully isolated power supply with rock-solid build quality and advanced features for a fraction of the cost of other high-end brands. Sure, there are fancier options out there—but they often come with a much higher price tag and limited availability, especially if you’re not in the US or EU.
For those of us living in countries where shipping fees, import taxes, and currency conversion make US- or EU-made gear nearly unattainable, brands like VITOOS really do fill an important gap. They offer quality gear at a reasonable price, and this time, they’ve absolutely nailed it.
I genuinely couldn’t find anything major to complain about. The unit does exactly what it claims, and it’s done so flawlessly since I first installed it on my pedalboard. For the money, this power supply is an absolute steal, and I have zero hesitation recommending it to anyone looking for a budget-friendly, high-quality power solution for their pedalboard.
Will it last forever? Only time will tell. But based on what I’ve seen so far, I’m pretty confident it’ll be part of my rig for a long time.
Pros
True isolation – Each output is genuinely isolated
Expandable – AC output allows daisy-chaining another unit or extension module.
Solid build quality – Rugged metal chassis with a premium feel and clean design.
Flexible voltage options – Switchable outputs: 9V/12V and 9V/18V, plus voltage/current doubler cables included.
Thoughtful accessories – Quality cables, polarity converters, battery clip, velcro straps, cable lock set, and more.
Well-packaged – Comes in a high-end, well-organized box with a clean English manual.
Affordable – Delivers high-end features at a budget-friendly price.
Cons
Only five outputs – Might be limiting for larger setups (though splitter cables help).
Tight spacing between outputs – Can be tricky if using bulky right-angle plugs.
No main power switch – Not unusual, but could be inconvenient for some setups.
May not fit under all boards – Slightly chunkier than some alternatives; check clearance before mounting.