KOIOS 4-In-1 Immersion Blender Review

Tina Pham
Tuyet Pham
Culinary Consultant
Lap Vo
Test Lead
Nguyen Ntk
Visual Specialist
Tested Using Methodology v1.0
KOIOS 4-In-1 Immersion Blender Review
Blender type: immersion
Power: 120W

Overall Verdict

Overall Score
  • Performance (50%)
  • Usability (30%)
  • Design (20%)

There’s not much to disparage about the KOIOS 4-in-1, given its inexpensive price. Of all of the low-range blenders we tested, it is the only one that doesn’t feel cheap or particularly flimsy. While it certainly isn’t a high-performance machine, it allows for consistent use and is really good at light-duty tasks like making whole-food combinations, emulsifying basic sauces, and pureeing baby food. It’s unclear if this blender can stand up against years of use, but for the most part, we're satisfied with its current efficiency.

Things We Like

  • The motor doesn’t vibrate as violently as others.
  • Extra attachments are included for a wider range of tasks.
  • It is easy to attach, remove, and clean the blending accessories.
  • The silicone buttons are responsive.
  • Its durability is backed up by a 2-year warranty.
  • We don't have to sacrifice efficiency for a bargain.

Things We Don’t Like

  • The blade guard can cause damage to the cookware’s surface.
  • The motor rating is 400 watts rather than its advertised rating of 800 watts.
  • Updated May 09, 2022:

    Review published.

We tested a variety of immersion blenders that are on the market today and especially recommend this blender for low-budget buyers. Sold at a bargain-basement price, the KOIOS 4-in-1 is not the best, but it impressed us with its reliable performance and a medium-quality construction. You can see for yourself how it performed in all our tests below.

KOIOS 4-In-1 Immersion Blender In-depth Review


How We Tested

The KOIOS 4-in-1 wasn’t designed for powerful performance, but it passed all of our tests without much difficulty. As you might assume, a low-range hand blender won’t churn out velvety results, but all the blends were definitely better than we expected.


Hot Soup Purée

The KOIOS 4-in-1 Soup
KOIOS 4-In-1 Hot Soup Purée 1
  • Pureeing Time: 30 seconds
  • Result: Slightly Chunky
  • Suction: No
  • Unprocessed Chunks: Yes

None of the low-range blenders we tested could yield the silkiest puree in 30 seconds, but we think the KOIOS’ results will still be acceptable to most home cooks.  In particular, the soup looked silky but when we ran it through a strainer, too many tiny bits were left behind. Nevertheless, we were still satisfied with this blender, given its consistency and smooth operation.



The KOIOS 4-in-1 Smoothie
KOIOS 4-In-1 Immersion Blender Smoothie 3
  • Blending Time: 1 min 20 secs
  • Result: Slightly Coarse
  • Suction: No
  • Unprocessed Chunks: No

The manufacturer recommends this blender not be used to process frozen fruits. That fact made us skeptical about its overall capability. After much deliberation, we decided to stick to the initial plan, putting it through our frozen smoothie test anyway. To our surprise, its result was nearly the same as that produced by the Vitamix 5-speed immersion blender. 

In less than a minute and a half, it churned out a frozen smoothie that was flavorful enough to entice our taste buds. The drink didn’t have a velvety smoothness; it was a bit grainy since the kale wasn’t entirely liquified. Despite that, it was still a sweet, creamy combination that we loved to sip on.



The KOIOS 4-in-1 Mayonnaise
  • Emulsifying Time: 1 min 10 secs
  • Result: Velvety
  • Suction: No

The KOIOS made short work of incorporating egg yolks and canola oil, churning out a harmonious texture in just over one minute. Apart from being one of the fastest, it was also among the few blenders in our test that produced exceptionally smooth emulsification. Our mayonnaise came out thick, creamy, and spreadable. For such a low-priced hand blender, this performance could hardly have been better.


Almond Milk

The KOIOS 4-in-1 Almond Milk
  • Grinding Time: 1 min 10 secs
  • Result: Fine
  • Suction: No

It was simple and easy to put together all the ingredients for a preservative-free milk using the KOIOS. Since this blender ground the nuts pretty evenly, our drink came out silky and creamy. That said, blending didn’t run smoothly; the blending beaker was too small, causing the liquid to overflow every time we moved the blender around.

If you intend to buy the KOIOS for drink preparation, don’t use the beaker that is included in its set.


Whipped Egg-Whites

The KOIOS 4-in-1 whipped egg-white
  • Beating Time: 2 min 40 secs
  • Result: Stiff
  • Suction: No

The KOIOS’s whisk attachment worked well — we got the perfect meringue out of the egg whites we beat with the whisk attachment. Its metal wires are bouncy and agile, so they’re flexible enough for whipping and fluffing. However, we can’t say for sure whether those wires will hold up to thick batters for bread doughs or baked cakes.

On a pragmatic note, the whole beating process lasted nearly 3 minutes, but it didn’t cause hand fatigue. We felt entirely comfortable in that prolonged operation, from start to finish. Indeed, using this blender for preparing airy, creamy desserts will help you stay creative without springing for an expensive specialty device.

Nothing is particularly unique in the KOIOS 4-in-1’s design, but common features like the stainless steel blades and control buttons are built well enough to make the blender itself stand out.

 In the Box

The KOIOS 4-in-1 Immersion Blender Unboxing
  • Motor body 
  • Blending shaft 
  • Whisk attachment
  • Food processor
  • Beaker   
  • User manual

In addition to a blending wand, this blender also comes with a beaker, a whisk attachment, and a food processor to enhance its versatility.


The KOIOS 4-in-1 Immersion Blender Length
  • Height
    15.3" (38.9 cm)
  • Width
    2.1" (5.3 cm)
  • Weight
    3.4 lbs (1.5 kg)
  • Shaft Length
    7.9" (20.1 cm)

Like all the light-duty immersion blenders we tested, the KOIOS 4-in-1 is well balanced. It is compact, portable, and has a long blending shaft that can be immersed in even a deep pot.


Build Quality

KOIOS 4-In-1 Immersion Construction

Made of medium-quality plastic reinforced with brushed stainless steel, the KOIOS’ body feels relatively solid (but it doesn’t look as sleek as the higher-priced models). Unlike the BELLA 10-speed, it showed no scratches after our course of testing. So far, we haven’t noticed any damage on the exterior; our blender still looks shiny and brand new.

There is a special inner rotary core fixed in the blending shaft that’s different from most immersion blenders in this price range. Thanks to this add-on, the tools are easy to attach to the motor body. Not only that, but they also latch securely in place, unlike the Muller Ultra-Stick that occasionally let go of its whisk.



KOIOS 4-In-1 Immersion Beaker
  • Material
  • Capacity
    20 oz
  • Measurements
  • Weight
    0.22 lb
  • Height
    6.7 inches
  • Suitable For
    Small batch
  • Dishwasher Safe
  • Tamper Included

The KOIOS’ beaker has a small 20-oz capacity with measurements in both milliliters and fluid ounces. As a nice bonus, it sports a flared base to ensure stability.

Speed and Controls

The KOIOS 4-in-1 Controls
The KOIOS 4-in-1 Speed and Controls
  • Control Type
    Press-button & speed dial
  • Min Speed
    11,500 RPM
  • Max Speed
    14,480 RPM
  • Presets
  • Max Noise Level
    90 dB
  • LED Display
  • Pulse Turbo Mode

We often feel a bit awkward with blenders that control speed with top-mounted dials; it’s really challenging to move the blending wand, adjust its speed, and hold the beaker at the same time. With the KOIOS, however, that isn’t an issue.

Our 4-in-1 machine offers 12 speed options and a Turbo function. It’s all controlled using two buttons and a dial. While the front controls are extremely responsive, the dial lets us switch between various speed settings with ease and this is partly because the blender itself runs very smoothly.

In particular, throughout each of our tests, we noticed that its motor didn’t vibrate too violently. This helped reduce the overall impact on the beaker and kept it stable rather than constantly jumping around the countertop. In other words, we didn’t need to hold the beaker throughout the whole job, so it wasn’t a problem to dial in the speed with a spare hand.

However, if you find it hard to adjust the dial, you can always just hit the turbo mode. That sends the blender into its highest speed immediately.


Blending Shaft

The KOIOS 4-in-1 Immersion Blender Blade
  • Material
    Stainless steel
  • Type
    Sharp Blade
  • Guard Material
    Stainless steel
  • Blade Count
  • Removable
  • Dishwasher Safe

Made of standard stainless steel plated with titanium, the blade has two prongs: one is sharp and the other is dull. Its relatively fragile construction means it isn’t intended for tough ingredients like ice cubes or coffee beans, but it’s still tough enough to handle whole-food combinations.

Unlike most other blenders with lobed or angular guards, this one’s blade guard is shaped like a parabolic arch. This special design allows us to easily reach the blade’s backside for cleaning. The vaulted slope also doesn’t trap food the way others do, so we never had to stop and dislodge debris with a spoon.

The blade guard is also designed to reduce splattering, and it’s really up to the job. However, due to its metal construction and sharp edges, it left marks on the beaker even when we blended very carefully.


Power Cord

The KOIOS 4-in-1 Immersion Blender Cord
  • Cord Length
    5.6 ft
  • Type
    2-prong plug
  • Detachable

The power cord is long enough that you won’t feel constrained. It has a small loop that is meant to keep the blender organized.

Extra Accessories: Whisk Attachment

The KOIOS 4-in-1 Immersion Blender Whisk Attachment
  • Material
    Stainless steel
  • Dishwasher Safe
  • Removable

This whisk attachment is moderately good at certain tasks like beating egg whites, whipping cream, and making emulsified sauces. Compared with other low-priced hand blenders such as the BELLA 10-speed or the Hamilton, its polished stainless steel wires feel more sturdy and durable under consistent use.

Extra Accessories: Food Processor

The KOIOS 4-in-1 Immersion Blender Food Processor
  • Material
    Plastic and Stainless steel
  • Dishwasher Safe
  • Removable

We haven’t conducted tests on this attachment, but the stainless steel S-blade’s construction looks capable of chopping various foods just like any other low-grade food processor.


How We Rated

Despite utilizing the same key design features as other low-range blenders such as the Muller Ultra-Stick, the KOIOS 4-in-1 manages to provide a better blending experience.


Ease of Use

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This KOIOS is easier to use than many other blenders not only because of its simple design but also because its buttons are very responsive. The motor’s minimal vibration contributes to the overall usability scores as well. Since the machine itself runs very smoothly, we can maneuver the blender in comfort. It was a pleasant departure after the excessive vibration of some other blenders.

During our testing, we also found that this blender didn’t create suction — a main cause of splattering when you lift it upward for an even blend. As such, we didn’t experience any trouble when speeding up or moving the blending wand, even at the highest speed setting.


Blade Assembly

The KOIOS Blade Assembly

This blender comes with accessory ejection buttons on the motor body — a handy add-on giving you more control over the blade detachment process. Just a quick press of these clicky buttons pushes the attachment off of the motor body.

Putting them back is easy as well. Simply align the shaft with the main housing and push until they click and lock into place. There is one thing we really like about this blender’s blade assembly, though: Unlike others, the KOIOS attachments do not need to be rotated to a specific alignment to lock into place.



The KOIOS Non-Slip Handle

The handle was comfortable to grip in all of the tests. Together with the machine’s minimal weight, its ergonomic design helps stave off hand fatigue, even through long bouts of vigorous blending. It also helped us maintain a grip even when the surface was wet or covered in grease.



We found the easiest and most effective way to clean the blending wand or any blending attachment was by scrubbing it under running tap water. More often than not, food tailings could be quickly removed, even when they accumulated in the blade’s backsides.

Compared to Other Immersion Blenders

Another mid-range immersion blender, the Cuisinart CSB-175 Smart Stick, delivers a quick batch of smoothies, hot soup, mayonnaise, and non-dairy milk. On the downside, the lack of an included whisk attachment did unfortunately make it fall short in the test of whipping egg whites. But unlike the others, this Cuisinart comes further with a Lock function, rather than only the common power button. To start blending, you’ll need to push the two buttons simultaneously with both hands. This is meant to prevent accidental operation, reducing the possibility of personal injury. We particularly like this idea, but in the end, cannot feel comfortable with the job that requires the joint operation of two buttons. 

While the Mueller Ultra-Stick wasn’t as efficient as its higher-priced competitors, nor it was the best in the segment, the texture and consistency of its soup, smoothie, and nut milk was acceptable for the price. We also found its whisk attachment could emulsify sauces and beat egg whites pretty well. Using this blender, however, wasn’t a pleasant experience, since its blending wand always sucked tightly to the blending container’s bottom causing food to splash all over our counter. 

If you want a higher-powered immersion blender, which is greatly capable of almost everything, we recommend considering the pricey Vitamix 5-speed. There is hardly a machine that needs less description than this blender. It's the fastest, most efficient, and strongest out of all the ones we tried. While it appears in pictures to be the same size as the KOIOS 4-in-1, it is actually heavier, but considering its handle is ergonomically designed with a rubber coating, the hefty weight won’t cause your hand to feel fatigue at all. 

Check for other models we tested in our Best Immersion Blenders guide.