The Ninja Professional Plus Blender DUO with Auto-iQ is a full-size blender with a 72-ounce main pitcher and a 24-ounce personal jar and to-go lid. Its design and performance are similar to other models we've tested, like the Ninja Professional Plus Blender with Auto-iQ. It's very well-built and not very loud when it's running. Unfortunately, it doesn't have a very wide range of speed settings and only offers a few blending programs.
Our Verdict
The Ninja Professional Plus Blender DUO with Auto-iQ is decent for multi-purpose use. Its large main jar is well-suited for making big batches of crushed ice or drinks like slushies. It can also make very smooth nut butter or hummus, although using it for thick mixtures can be time-consuming. The included personal jar is ideal for making single-serve drinks like smoothies, but it doesn't make a completely smooth blend with big batches of fibrous ingredients, even after several minutes of blending. You can't use it for hot blending.
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Relatively quiet.
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Dishwasher-safe.
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Superb for single-serve smoothies.
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Makes smooth nut butter.
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Slow to blend big batches of fibrous ingredients.
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Small selection of speed settings and blending programs.
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Difficult to clean by hand.
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Can't hot blend.
The Ninja Professional Plus Blender DUO with Auto-iQ is excellent for single-serve smoothies. It comes with a personal jar that's very well-suited for making smoothies or shakes for one. There's a matching to-go lid so you can take your drink with you to-go. The personal jar and blade assembly are dishwasher-safe, and it's not very loud for a full-size blender, which is nice if you like a smoothie in the morning.
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Relatively quiet.
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Dishwasher-safe.
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Superb for single-serve smoothies.
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Difficult to clean by hand.
The Ninja Professional Plus Blender DUO with Auto-iQ is good for making multiple smoothie servings. It has a large capacity and easily crushes ice, so ice cubes or frozen fruit chunks are no problem. It can make a well-blended smoothie with ingredients like kale and blueberries, but it'll be slightly grainy, and you have to blend for a long time to get the best results. The main jar is tricky to clean by hand, but on the plus side, it's dishwasher-safe.
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Relatively quiet.
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Dishwasher-safe.
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Fantastic ice crusher.
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Slow to blend big batches of fibrous ingredients.
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Difficult to clean by hand.
The Ninja Professional Plus Blender DUO with Auto-iQ is fantastic for crushing ice. Like other similarly designed blenders from Ninja, it has no trouble turning ice cubes into snow-like ice, ideal for slushies or snow cones. It also has a great build quality.
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Relatively quiet.
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Dishwasher-safe.
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Fantastic ice crusher.
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Difficult to clean by hand.
You can't use the Ninja Professional Plus Blender DUO with Auto-iQ for hot blending, so if you like a lot of pureed soups and sauces, it's probably not the blender for you. It's slow to blend big batches of fibrous ingredients and makes a slightly grainy blend with ingredients like broccoli and kale. That said, it has a big 72-ounce capacity.
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Relatively quiet.
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Dishwasher-safe.
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Slow to blend big batches of fibrous ingredients.
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Difficult to clean by hand.
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Can't hot blend.
The Ninja Professional Plus Blender DUO with Auto-iQ is decent for professional use. It's very well-built and has a big capacity. It easily makes snow-like crushed and can produce smooth nut butter, although it takes a while. It's not too loud, which is nice in a busy kitchen. However, you can't use it for hot blending, and it takes a long time to process fibrous ingredients in its main jar, so it's not ideal for big batches of fruit smoothies or vegetable soup.
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Relatively quiet.
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Dishwasher-safe.
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Fantastic ice crusher.
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Makes smooth nut butter.
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Slow to blend big batches of fibrous ingredients.
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Small selection of speed settings and blending programs.
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Difficult to clean by hand.
- 7.0 Multi-Purpose
- 8.8 Smoothies (Single Serving)
- 8.1 Smoothies (Multiple Servings)
- 9.7 Ice Crushing
- 4.9 Soups
- 7.5 Professional Use
- Updated Sep 23, 2024: We've updated the results to more accurately reflect the blender's performance. The score for Fibrous Ingredients (Full Capacity) texture changed from 6.5 to 7.5.
- Updated Dec 02, 2022: Review published.
- Updated Nov 29, 2022: Early access published.
- Updated Nov 28, 2022: Our testers have started testing this product.
- Updated Nov 22, 2022: The product has arrived in our lab, and our testers will start evaluating it soon.
- Updated Nov 17, 2022: We've purchased the product and are waiting for it to arrive in our lab.
Differences Between Sizes And Variants
The Ninja Professional Plus Blender DUO with Auto-iQ is sold with one or two personal jars. The variant we tested (model BN750) comes with one jar, and you can see the label for the unit we tested here. We expect our results to be valid for the other variants as well. If you come across another version of this blender, please let us know in the discussions, and we'll update our review.
| Model Number | Included Accessories |
| BN750 | 72oz pitcher, pitcher lid, 24oz personal jar (with blade assembly), to-go lid |
| BN751, DB751A | 72oz pitcher, pitcher lid, 2x 24oz personal jar (with blade assembly), 2x to-go lid |
| BN753 | 72oz pitcher, pitcher lid, 24oz personal jar, 18oz personal jar, personal jar blade assembly, 2x to-go lid |
Compared To Other Blenders
This blender has a similar design and performance to other Ninja blenders, like the Ninja Professional Plus Blender with Auto-iQ and the Ninja Professional Plus Kitchen System with Auto-iQ. Its personal jar is fantastic for smoothies, and its main pitcher is ideal for crushing ice, but it's not the most versatile option otherwise. It's well-built and quiet, but if you want to blend hot ingredients or make smoothies for the whole family, you might prefer the Ninja Foodi Power Βlender & Processor System or the Ninja Chef Blender.
If you're still looking for a blender, see our recommendations for the best blenders for ice crushing, the best blenders for frozen drinks, and the best blenders.
You might prefer either the Ninja Professional Plus Kitchen System with Auto-iQ or the Ninja Professional Plus Blender DUO with Auto-iQ, depending on what accessories and features you want. In addition to a 72-ounce pitcher, the Kitchen System comes with a food processing attachment for chopping, slicing, and grating, along with a pair of personal jars with to-go lids. The DUO has the same pitcher but only includes one personal jar and lid.
The Ninja Professional Plus Blender DUO with Auto-iQ and the Ninja Detect Duo Power Blender Pro both come with a 72oz main jar and personal jars for smoothies. The Detect makes a smoother blend with ingredients like leafy greens, so it can make better-blended smoothies. However, the Professional is sturdier and quieter when it's running.
The Ninja Blender Duo with Auto-iQ BL642 and the Ninja Professional Plus Blender DUO with Auto-iQ are similar blenders. The BL642 comes with a 72-ounce pitcher and three personal jars for single-serve smoothies, and the DUO comes with the same 72-ounce pitcher and only one personal jar. The DUO is quieter and makes a smoother blend with big batches of fibrous ingredients. Otherwise, they perform about the same.
The main difference between the Ninja Professional Plus Blender with Auto-iQ and the Ninja Professional Plus Blender DUO with Auto-iQ is that the DUO comes with a 24-ounce personal jar, along with a matching to-go lid and blade assembly. If you use the personal jar, it's much better for making single-serve smoothies. Otherwise, they perform quite similarly.
The Ninja Professional Plus Blender DUO with Auto-iQ is better than the Ninja Foodi Power Pitcher SS201 for most purposes. The DUO is better for single-serve recipes like smoothies, thanks to its 24-ounce personal jar. It's also better for processing big batches of fibrous ingredients like kale and much quieter when it's running. On the other hand, the Foodi comes with an extra blade for forming dough. It's easier to use for recipes like nut butter.
The Ninja Professional Plus Blender DUO with Auto-iQ and the Black+Decker Quiet Blender with Cyclone Glass Jar are two glass blenders with different strengths. The Ninja is a sturdier blender and is much better for crushing ice in its main jar, so it's more suitable for big batches of slushies or blended cocktails. The Black+Decker is much better for big batches of smoothies since it does a much better job of blending fibrous ingredients in its main jar.
Test Results
It's a big full-size blender that you probably need to store on your counter instead of a cupboard or shelf. It's not particularly heavy, and you can remove the jar for easier storage.
This blender has great build quality. The base and transmission are made of plastic that feels sturdy but not high-end or premium, similar to the Ninja Professional Plus Kitchen System with Auto-iQ. The control panel has clicky buttons and is bright and easy to read when it's lit up. The personal jar and blade assembly also feel well-made, and the suction cups under the blender's motor base do a good job of keeping it from moving around on your counter.
The main pitcher has a 72-ounce capacity, though there's a 'max liquid' line at the 64-ounce mark. The personal jar has a 24-ounce capacity.
The jars and lids are made of plastic. The jars, lids, and blade assemblies are all top-rack dishwasher-safe.
The main pitcher's blades are removable and have a stacked design. They're very sharp. There's a second blade assembly included for the personal jar that screws onto that jar like a lid.
The main pitcher's lid is easy to put on and remove from the jar. It locks into place using the handle. It's not a 2-part lid, so it doesn't have a removable center piece that would allow you to pour in more ingredients without taking off the lid. However, you can open the spout on one corner to pour from the pitcher with the lid on.
There's also a to-go lid for the personal jar.
The power cord isn't particularly long but can reach an outlet near your counter. There's a place to wrap it up at the back of the motor base when the blender isn't plugged in.
- 72-ounce pitcher
- Blade stack assembly
- Pitcher lid
- 24-ounce personal cup
- To-go lid for personal cup
- 'Pro Extractor' blade assembly for personal cup
- Motor base
- Owner's guide and quick start guide
It's fantastic for processing small batches of fibrous ingredients. Using the personal jar, it's easy to use to make a very smooth blend with ingredients like kale. It doesn't make as smooth a puree as the Ninja Mega Kitchen System BL770 in its personal jars, and some blenders can make a single-serve faster, but most people will be very happy with its performance for small batches.
The Ninja Professional Plus Blender DUO with Auto-iQ is decent for big batches of fibrous ingredients. It makes a well-blended but slightly grainy blend with fibrous ingredients like kale or broccoli. Unfortunately, it takes a long time to get the best results.
It's fantastic for crushing ice. If you use the 'pulse' button to pulse manually, it easily pulverizes ice cubes into very uniform snow-like crushed ice.
It's great for nut butter. It makes very smooth, almost liquified nut butter. However, the process is quite time-consuming, and you need to stop the blender partway through, remove the lid and use a tool like a spatula to scrape the sides of the jar.
The Ninja BN750 isn't very loud for a full-size blender. It's noticeably less noisy than models like the Ninja Foodi Power Pitcher System and KitchenAid K400.
There isn't a big difference between the lowest and highest speeds. It's not ideal if you want to make small speed adjustments or if you want to start at a low speed and gradually ramp up to high.
The red button acts as an on/off toggle that has to be activated before the blender will run. There are buttons for three speed presets. The blender will run at the selected speed for one minute before shutting off automatically. You can also pulse by pressing and releasing the pulse button. There's one blending program that works with the main pitcher, 'Smoothie', which lasts for 55 seconds. With the personal jar docked, you can select 'Extract', a one-minute cycle meant for smoothies with difficult ingredients like leafy greens.
It's not easy to clean. Even though the blade assembly is removable, because the blades are so sharp, it's awkward and potentially dangerous to clean by hand. The design of the blade stack and jar also means that food can get stuck in the groove at the bottom of the assembly where it fits into the jar, and it's not easy to reach that spot.
