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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Dimensions
    2. Build Quality
    3. Jar Capacity
    4. Jar/Beaker Materials
    5. Blades
    6. Lid
    7. Power Cord
    8. In The Box
  5. Performance
    1. Fibrous Ingredients (Small Batches)
    2. Fibrous Ingredients (Full Capacity)
    3. Crushed Ice
    4. Nut Butter
    5. Noise
    6. Blade Speed
  6. Ease Of Use
    1. Controls And Programs
    2. Cleaning
  7. Comments

Ninja DUO vs Ninja Blender Duo with Auto-iQ BL642

Side-by-Side Comparison

Products

Ninja DUO
Ninja Blender Duo with Auto-iQ BL642

Tested using Methodology v1.0

Updated May 29, 2023 03:08 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.0

Updated Sep 24, 2024 05:16 PM

SEE PRICE
Amazon.com
Ninja DUO Picture
Ninja Blender Duo with Auto-iQ BL642 Picture

Variants

  • IV701 (Black)
  • BL642 (Black)
  • BL640 (Black)
  • BL641 (Black/Silver)

Our Verdict

Ninja DUO

Ninja Blender Duo with Auto-iQ BL642

The Ninja DUO and the Ninja Blender Duo with Auto-iQ BL642 are full-size blenders with personal jars for smoothies and have different strengths. The DUO makes a smoother blend with fibrous ingredients and has a juicer attachment. On the other hand, the BL642 is much quieter when running and also makes well-blended single-serve smoothies if you use its personal jars.

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Main Differences for
Multi-Purpose

Threshold 

0.10

Multi-Purpose 

7.2
6.9

Fibrous Ingredients (Full Capacity) 
 

9.4
6.8

Full Comparison

Design

Dimensions 
 

Blender Type 
 

Full Size Blender
Full Size Blender

Box Picture  

Ninja DUO Box Picture
Ninja Blender Duo with Auto-iQ BL642 Box Picture

Height 
 

17.4" (44.2 cm)
17.8" (45.2 cm)

Width  

7.2" (18.2 cm)
7.6" (19.2 cm)

Depth  

10.0" (25.5 cm)
10.0" (25.5 cm)

Weight 
 

9.8 lbs (4.4 kg)
8.8 lbs (4.0 kg)

Shaft Length (Immersion Blenders) 
 

N/A
N/A
Show Text 

Build Quality 
 

8.0
8.0

Build Quality Picture  

Ninja DUO Build Quality Picture
Ninja Blender Duo with Auto-iQ BL642 Build Quality Picture
Show Text 

Jar Capacity 
 

9.8
9.8

Main Jar Capacity 
 

72.0 oz (2,129 ml)
72.0 oz (2,129 ml)

Additional Jar Capacity 
 

20.0 oz (591 ml)
32.0 oz (946 ml)
Show Text 

Jar/Beaker Materials 
 

Jar Picture  

Ninja DUO Jar Picture
Ninja Blender Duo with Auto-iQ BL642 Jar Picture

Optional Jar Picture  

Ninja DUO Optional Jar Picture
Ninja Blender Duo with Auto-iQ BL642 Optional Jar Picture

Jar/Beaker Material 
 

BPA-Free Plastic
BPA-Free Plastic

Dishwasher Safe 
 

Yes
Yes
Show Text 

Blades 
 

Blades Picture  

Ninja DUO Blades Picture
Ninja Blender Duo with Auto-iQ BL642 Blades Picture

Blade Type 
 

Sharp
Sharp

Blade Count 
 

8
6

Removable 
 

No
Yes

Dishwasher Safe 
 

Yes
Yes
Show Text 

Lid 
 

Lid Picture  

Ninja DUO Lid Picture
Ninja Blender Duo with Auto-iQ BL642 Lid Picture

Two-Part Lid 
 

No
No

Lid Closing Type 
 

Lock Mechanism
Lock Mechanism
Show Text 

Power Cord  

Cable Picture  

Ninja DUO Cable Picture
Ninja Blender Duo with Auto-iQ BL642 Cable Picture

Stow-Away Compartment 
 

Yes
Yes

Cord Length 
 

3.0 ft (0.9 m)
2.6 ft (0.8 m)
Show Text 

In The Box  

Bundle Picture  

Ninja DUO Bundle Picture
Ninja Blender Duo with Auto-iQ BL642 Bundle Picture
Show Text 
Performance

Fibrous Ingredients (Small Batches) 
 

9.9
9.3

Fibrous Ingredients (Small Batches) Photo  

Ninja DUO Fibrous Ingredients (Small Batches) Photo
Ninja Blender Duo with Auto-iQ BL642 Fibrous Ingredients (Small Batches) Photo

Jar Used 
 

Additional Jar
Additional Jar

Fibrous Ingredients (Small Batches) Video  

Fibrous Ingredients Processing 
 

9.5
8.5

Fibrous Ingredients Texture 
 

10
9.5
Show Text 

Fibrous Ingredients (Full Capacity) 
 

9.4
6.8

Fibrous Ingredients (Full Capacity) Photo  

Ninja DUO Fibrous Ingredients (Full Capacity) Photo
Ninja Blender Duo with Auto-iQ BL642 Fibrous Ingredients (Full Capacity) Photo

Fibrous Ingredients (Full Capacity) Video  

Jar Used  

Main Jar
Main Jar

Fibrous Ingredients Processing 
 

9.0
6.0

Fibrous Ingredients Texture 
 

9.5
7.0
Show Text 

Crushed Ice 
 

9.6
10

Crushed Ice Photo  

Ninja DUO Crushed Ice Photo
Ninja Blender Duo with Auto-iQ BL642 Crushed Ice Photo

Crushed Ice Video  

Crushed Ice Preparation 
 

8.5
10

Crushed Ice Texture 
 

10
10
Show Text 

Nut Butter 
 

7.8
8.1

Nut Butter Picture  

Ninja DUO Nut Butter Picture
Ninja Blender Duo with Auto-iQ BL642 Nut Butter Picture

Nut Butter Video  

Nut Butter Preparation 
 

6.0
6.0

Nut Butter Texture 
 

9.0
9.5
Show Text 

Noise 
 

5.8
7.4

Noise @ Max Speed 
 

97.8 dB
91.4 dB

Noise Video  

Show Text 

Blade Speed 
 

Min Speed 
 

17,600 RPM
3,200 RPM

Power 
 

1,100 W
1,200 W

Max Speed 
 

20,500 RPM
4,600 RPM

Speed Adjustment Based On Jar Type 
 

No
Yes
Show Text 
Ease Of Use

Controls And Programs 
 

Control Panel  

Ninja DUO Control Panel
Ninja Blender Duo with Auto-iQ BL642 Control Panel

On/Off Switch 
 

Yes
Yes

Speed Presets 
 

2
3

Hot Blending 
 

No
No

Speed Dial 
 

No
No

Pulse/Turbo Mode 
 

Yes
Yes

Programs 
 

6
4

Blending Time Indicator 
 

Yes
Yes

Programmable Timer 
 

No
No
Show Text 

Cleaning 
 

6.5
6.0

Self-Cleaning Video  

Cleaning Video  

Show Text 

Ninja DUO

Ninja Blender Duo with Auto-iQ BL642

Comments

  1. Comparison

Ninja DUO vs Ninja Blender Duo with Auto-iQ BL642: Main Discussion

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