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KOIOS 4-In-1 Immersion vs Mueller Ultra-Stick Side-by-Side Comparison

Want to see how the KOIOS 4-in-1 compares with the Mueller Ultra-Stick ? Then take a look at our comparison.

By , , and Updated

KOIOS 4-In-1

Mueller Ultra-Stick

KOIOS 4-In-1 Immersion vs Mueller Ultra-Stick

Overall Verdict

8.0
Overall Score
7.2
Overall Score
  • Performance (50%)7.9
  • Design (20%)7.6
  • Usability (30%)8.3
  • Performance (50%)7.3
  • Design (20%)6.8
  • Usability (30%)7.4

The Muller Ultra-Stick is similar to the KOIOS 4-in-1 in appearance, operation, and versatility, but not as good in other aspects. It’s more awkward to use and we weren’t really comfortable during operation. Our hands felt tired every single time we used this blender for more than a single batch.

In terms of its overall construction, it looks flimsier with substandard blades. We also felt that there was a possibility of the coupler that attaches the removal parts to the motor body being irreparably broken. 

Most importantly, the textures it produced in our tests weren’t as smooth as those of the KOIOIS.

Pros & Cons

  • 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.
  • It’s budget-priced but loaded with accessories 
  • The stainless steel exterior is corrosion resistant 
  • The handle is uniquely-designed with a comfortable grip 
  • Wiping it down is not so difficult
  • The whole blender can be hung on a hook with other kitchen tools
  • 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.
  • The low-quality construction cannot ensure durability 
  • The blade isn’t good at preparing frozen smoothies or pulverizing solid ingredients 
  • The whisk attachment doesn’t provide consistent performance

Key Specs

Dimension
H15.3 x W2.1 inches
H15.6 x W2.8 inches
Weight
3.4 lbs (1.5 kg)
2.2 pounds
Number of speeds
13
8
Pulse/Turbo option
Yes
Yes
Min speed
11,500 RPM
12,550 RPM
Max speed
14,480 RPM
14,640 RPM

Where to Buy?

Price at publication
$39.98
$36.17

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Analysis and Test Results

Performance

Overall Performance Scoring
7.9
7.3

Puree Soup

7.5
7.0
Scooping a spoon of pureéd soup made by the KOIOS 800W immersion hand blender from a plastic beaker.
Scooping a spoon of pureéd soup made by the KOIOS 800W immersion hand blender from a plastic beaker.
KOIOS 4-In-1 Immersion Hot Soup
A batch of soup pureéd by the KOIOS 4-in-1 hand blender is checked for smoothness by being drained through a stainless steel mesh strainer.
The Mueller Ultra-Stick Soup Test
Scooping a spoon of pureéd soup from a full batch in a plastic beaker made by the Mueller Ultra-Stick hand blender.
A batch of soup pureéd by the Mueller Ultra-Stick immersion blender is checked for smoothness by being drained through a stainless steel mesh strainer.
Pureeing Time
30 seconds
30 seconds
Result
Slightly Chunky
Slightly chunky
Suction
No
Tightly

Frozen Smoothie

7.8
7.0
A white bowl containing a batch of green smoothie whose parts are scooped with a stainless steel spoon is between the KOIOS’s motor body and a smartphone displaying the total blending time (1 minute and 19 seconds).
A white bowl containing a batch of green smoothie whose parts are scooped with a stainless steel spoon is between the KOIOS’s motor body and a smartphone displaying the total blending time (1 minute and 19 seconds).
KOIOS 4-In-1 Immersion Smoothie
After finishing blending, the green smoothie made by the KOIOS hand blender was spread evenly throughout a white paper to check for solid chunks.
A plastic beaker containing a batch of green smoothie whose parts are scooped with a stainless steel spoon is between the Mueller’s motor body and a smartphone displaying the total blending time (1 minute and 15 seconds).
A plastic beaker containing a batch of green smoothie whose parts are scooped with a stainless steel spoon is between the Mueller’s motor body and a smartphone displaying the total blending time (1 minute and 15 seconds).
Mueller Ultra-Stick Smoothie Test
After finishing blending, the green smoothie made by the Mueller immersion blender was spread evenly throughout a white paper to check for solid chunks.
Blending Time
1 min 20 secs
1 min 15 secs
Result
Slightly Coarse
Chunky
Suction
No
Slightly

Mayonnaise

9.8
8.5
A little bit of mayonnaise sticking in the whisk attachment of the KOIOS 4-in-1 hand blender when it is removed from the full batch emulsified in a plastic beaker standing between the motor body and a smartphone displaying the total emulsion time (1 minute and 10 seconds).
A little bit of mayonnaise sticking in the whisk attachment of the KOIOS 4-in-1 hand blender when it is removed from the full batch emulsified in a plastic beaker standing between the motor body and a smartphone displaying the total emulsion time (1 minute and 10 seconds).
KOIOS 4-In-1 Immersion Mayonnaise
A white bowl of mayonnaise made by the Mueller immersion blender with a stainless steel spoon inside.
A white bowl of mayonnaise made by the Mueller immersion blender with a stainless steel spoon inside.
The whisk attachment of the Mueller is immersed in a plastic beaker containing egg yolks.
Emulsifying Time
1 min 10 secs
1 mins 45 secs
Result
Velvety
Smooth
Suction
No
No

Almond Milk

7.5
7.5
The KOIOS’s motor body, a plastic beaker containing almond milk, a white plate of almond pulp, and a small red note displaying the total grinding time (1 minute 30 seconds) being side by side.
The KOIOS’s motor body, a plastic beaker containing almond milk, a white plate of almond pulp, and a small red note displaying the total grinding time (1 minute 30 seconds) being side by side.
KOIOS 4-In-1 Immersion Almond Milk
Grinding Time
1 min 10 secs
1 mins 5 secs
Result
Fine
Coarse
Suction
No
Tightly

Whipped Egg Whites

7.0
7.0
The 24-oz plastic beaker containing testing beaten egg-white of the KOIOS 4-in-1 immersion blender is put upside down on the gray table with its motor body and a smartphone displaying the total whipping time (2 minutes and 41 seconds) by its sides.
The 24-oz plastic beaker containing testing beaten egg-white of the KOIOS 4-in-1 immersion blender is put upside down on the gray table with its motor body and a smartphone displaying the total whipping time (2 minutes and 41 seconds) by its sides.
KOIOS 4-In-1 Immersion Whipped Egg-Whites
Mueller Ultra-Stick Whipped Egg-Whites
Putting a plastic beaker containing beaten egg-white of the Mueller Ultra-Stick upside down on a gray table.
Inside the plastic beaker containing a batch of beaten egg-white prepared by the Mueller Ultra-Stick immersion blender.
Beating Time
2 min 40 secs
2 mins 37 secs
Result
Stiff
Stiff
Suction
No
No

Design

Overall Design Scoring
7.6
6.8

In The Box

The KOIOS 4-in-1 Stick Blender is shipped with a paper carton box, an immersion blending wand, a motor body, a plastic beaker, a whisk attachment, a food processor, and a user manual.
The Mueller Immersion Blender milk frother attachment, motor body, blending wand, whisk attachment, paper carton box, and user manuals lying side by side on a table.

Dimensions

The KOIOS 4-in Immersion Blender stands on top of its blending shaft on a gray table, with the length of the blending shaft being noted to the side as 7.9 inches, and the total length of the unit as 15.3 inches.
The Mueller Austria Ultra-Stick Immersion Blender standing on top of its blending shaft on a gray table, with the length of the blending shaft being noted to the side as 7.7 inches, and the total length of the unit as 15.55 inches.
Height
15.3" (38.9 cm)
15.6" (39.6 cm)
Width
2.1" (5.3 cm)
2.8" (7.1 cm)
Weight
3.4 lbs (1.5 kg)
2.2 lbs (1.0 kg)
Shaft Length
7.9" (20.1 cm)
7.7" (19.6 cm)

Build Quality

7.5
7.0
The whisk attachment, motor body, and blending shaft of the KOIOS 4-in-1 hand-held blender lying flat on a gray table.
A close-up of the immersion blending wand, motor body, and whisk attachment of the Mueller Stainless Steel Hand Blender.

Blades

7.0
7.0
The blending wand of the KOIOS 4-in-1 hand blender lying flat on a gray table.
A close-up of the blade assembly of the Mueller Immersion Blender.
Material
Stainless steel
Stainless steel
Type
Sharp Blade
Sharp Blade
Guard Material
Stainless steel
Stainless steel
Blade Count
2
2
Removable
Yes
No
Dishwasher Safe
Yes
Yes

Power Cord

10
10
The KOIOS 4-in-1 Immersion Blender on a gray table with its power cord rolled up next to it.
The Mueller Ultra-Stick Immersion Blender on a gray table with its power cord rolled up next to it.
Cord Length
5.6 ft (1.7 m)
4.8 ft (1.5 m)
Type
2-prong plug
2-prong plug
Detachable
No
No

Speed And Controls

A close-up of the Power button and the TURBO button of the KOIOS 4-in-1.
A close-up of the Power button and the TURBO button of the KOIOS 4-in-1.
A close-up of 12 speed settings on the top of the KOIOS’s motor body.
A close-up of 8 speed settings and a speed dial of the Mueller Hand Blender.
Activation
Press-button & speed dial
Press and Rotate
Min Speed
11,500 RPM
12,550 RPM
Max Speed
14,480 RPM
14,640 RPM
Presets
No
No
Noise Level
90 dB
78 dB
Digital Display
No
No
Pulse Mode
Yes
Yes

Accessories

The KOIOS 4-in-1 Immersion Blender Whisk Attachment lying flat on a gray table.
The Mueller Ultra-Stick Immersion Blender Whisk Attachment lying flat on a gray table.
Material
Stainless steel
Stainless steel
Dishwasher Safe
Yes
Yes
Removable
Yes
Yes

Main Jar

10
0.0
An included plastic beaker of the KOIOS 4-in-1 hand blender standing on a gray table.
Material
Plastic
N/A
Capacity
20 oz
NaN fl oz (NaN ml)
Measurements
Yes
N/A
Weight
0.22 lb
NaN oz (NaN g)
Height
6.7" (17.0 cm)
NaN" (NaN cm)
Dishwasher Safe
Yes
N/A

Usability

Overall Usability Scoring
8.3
7.4

Blade Assembly

8.5
8.5
The KOIOS Blade Assembly

Handling

8.0
6.5
Someone uses two hands to control the KOIOIS immersion blender: one for holding the handle and pressing the power button at the same time, the other for rotating the speed dial.
Someone uses two hands to control the Mueller Ultra-Stick immersion blender: one for holding the handle and pressing the power button at the same time, the other for rotating the speed dial.

Cleanability

8.5
8.5

Easeof Use

8.3
7.3

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Behind the Comparison

Headshot of Tina Pham
Tina PhamReviewer

Tina Pham is a staff writer and reviewer, with five years of experience in the industry. As a passionate amateur home cook, she loves to discover practical cooking solutions, and has made it her mission to bring her findings to every kitchen. Her ultimate goal is making cooking more of a pleasure for all.

Headshot of Lap Vo
Lap VoTest Lead

Lap is Head of the Research, Testing, and Review Team (RTR Team) at HealthyKitchen101.com, where he directs and supervises the testing of kitchen gadgets and appliances.

Headshot of Tuyet Pham
Tuyet PhamProfessional Chef

Tuyet Pham is an award-winning Saigonese chef passionate about delicious and healthful foods. At HealthyKitchen101, she develops recipes and collaborates with our Research, Testing, and Review lab to evaluate the performance of cooking appliances. Her assessments add a strong authoritative voice to our product scoring process.

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