Kitchen · PRODUCT REVIEW

Hamilton Beach
Big Mouth Duo 12-Cup Processor with 4-Cup Mini Bowl (70580)

Nested 12-cup and 4-cup bowls with Big Mouth chute. A closer look at the benefits, the limitations, and the alternatives.

Buyer Shortlists editorial·Updated
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. How our links work. This review uses linked manufacturer documentation. We have not tested this product hands-on.
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THE SHORT ANSWER

Our take

Hamilton Beach's 70580 Big Mouth Duo is documented with a 12-cup main bowl and a separate 4-cup mini bowl that nest together. The maker lists a 500-watt motor, Big Mouth feed chute, S-blade, reversible slicing/shredding disc, touchpad, and dishwasher-safe removable parts. The exact Amazon page maps B005OYE6NO to model 70580, which supports a direct tagged link. The maker lists two speeds plus pulse, while the Amazon generic description says three speeds plus pulse; this review omits the disputed count and uses the maker specification. The two bowls create a useful fit distinction from one-bowl 12-cup models.

Consider it for

A household that expects both full-batch processing and smaller jobs and wants one documented system with two work bowls..

Look elsewhere if

It is not for a shopper seeking a five-cup-or-smaller main bowl, a verified dicing or spiralizing kit, or an unambiguous speed count from every seller page.

Pros & cons

What could work for you, and what to consider before buying.

What works in its favor

  • The maker identifies both a 12-cup main bowl and a separate 4-cup mini bowl.
  • A Big Mouth chute, chopping S-blade, and reversible slice/shred disc are documented.
  • The exact Amazon page maps the ASIN to model 70580, supporting a tagged direct product link.

What to weigh up

  • The large 12-cup main bowl is not a compact small-batch processor by the site's capacity filters.
  • The maker and generic Amazon description differ on the number of speeds; only the maker's count is reported.
  • No dicing kit, spiralizer, or dough blade is included in the saved maker parts list.

The key details

Published product specifications
Model covered70580
Main bowl capacity12-cup main bowl
Small-batch bowlSeparate 4-cup mini bowl
Slicing and shreddingReversible slicing/shredding disc
Special attachmentBig Mouth chute and S-blade
Dough bladeTwo speeds plus pulse per maker; 500 W

Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.

What the features mean for you

Two bowl sizes make this more than a large-batch processor

The 70580's strongest differentiator is its nested 12-cup main bowl and separate 4-cup mini bowl. A buyer can use the larger vessel for family meal preparation and the smaller one for a quick chop without moving to a separate appliance. Both capacities are stated by Hamilton Beach, and the maker says the bowls nest for compact storage. This profile treats the main capacity as 12 cups and the smallBowl attribute as true because the 4-cup vessel is an independent work bowl. No recipe-specific yield is inferred from either nominal figure. [bowlCapacityCups, smallBowl]

The Big Mouth chute and reversible disc cover routine cuts

Hamilton Beach lists a wide Big Mouth feed chute along with a reversible slicing/shredding disc and an S-shaped chopping blade. The maker describes slicing and shredding vegetables and cheese, while the blade covers chopping, mixing, and pureeing tasks. These are recognizable bowl-processor jobs; the profile does not stretch them into a dicing kit, spiralizer, or dedicated meat grinder. The seller's package should still be checked for both bowl sizes and both standard processing tools, especially when a listing is renewed or bundled. [sliceShred]

Use the small bowl as a second work zone

The four-cup bowl is not just a second capacity number: Hamilton Beach presents it as a mini bowl for smaller tasks and says it nests with the large bowl. That can simplify a routine in which the user alternates between a full-size preparation and a smaller ingredient batch. It remains one system with multiple pieces to store and wash. The 4-cup mini bowl is within the five-cup small-batch limit, while the 12-cup main bowl remains the capacity used for the primary size question. The profile keeps these two concepts separate. [smallBowl]

The speed wording is deliberately qualified

Hamilton Beach's page describes two speeds plus pulse for model 70580. The exact Amazon page is useful for identity and maps B005OYE6NO to the 70580 model, but its generic description uses three speeds plus pulse. Because that count conflicts, the matching and review use the maker's stated controls and do not claim that the retailer wording confirms another setting. The available evidence supports the bowl and attachment configuration more clearly than the disputed speed phrase. A buyer can inspect the control panel and use-and-care instructions for the exact unit received. [sliceShred]

The exact ASIN has a model crosswalk

Unlike several historic rows in this category, B005OYE6NO is mapped on the Amazon product page to Hamilton Beach model 70580. The direct destination uses that exact ASIN with the affiliate tag. This establishes model identity for the page checked, not a guaranteed current offer or an identical seller bundle at a later date. Compare the model suffix and included 12-cup bowl, 4-cup bowl, disc, and S-blade before buying. No current price or availability claim is included, and the recommendation reflects documented features rather than hands-on testing. [bowlCapacityCups]

What else to compare

For an eight-cup continuous-flow format compare BLACK+DECKER FP1600B; for a larger Cuisinart single-bowl model compare DFP-14CGRY.

Explore this category →

Before you buy

What bowls come with model 70580?

Hamilton Beach lists a 12-cup main bowl and a separate 4-cup mini bowl that nest together.

How many speeds does it have?

Hamilton Beach lists two speeds plus pulse; the Amazon generic description conflicts, so this review follows the maker page.

Does B005OYE6NO map to the 70580?

The exact Amazon product page identifies Hamilton Beach model 70580 for ASIN B005OYE6NO; the link is tagged for affiliate tracking.

Where can I check the current price?

Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.

Sources & review basis

We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.

Read our research and update process →

The decision

Choose 70580 when you would use both its 12-cup and 4-cup bowls, and confirm the seller's exact tool set.

Is it the right fit?

Check the exact model and today’s offers on Amazon.

As an Amazon Associate I earn from qualifying purchases.