KitchenAid K400 Variable Speed Blender
- Countertop Blender
- 56 fl oz
- 1200 watts
- Corded electric
- Better rated than 57%
- More reviewed than 77%
Owners with prior high-end blender experience rate its power and consistency highly; factor in the noise and occasional cosmetic quality control miss.
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How it ranks among the 135 countertop blenders we track
4.5★ across 1,561 Amazon ratings, Bayesian-smoothed toward the category average.
1,561 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 135 countertop blenders we track - how the scorecard works · full countertop blenders data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jun 13, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The KitchenAid K400 (KSB4027) is a 56 ounce variable speed blender with Intelli-Speed motor control, three preset programs and a self-clean cycle, sized to sit next to a KitchenAid stand mixer.
Several owners who came from a Vitamix say this matches it for blending power and consistency while being easier to clean thanks to the jar shape. The tradeoffs owners raise are volume during operation and at least one report of a loose exterior trim band, so fit and finish isn't described as consistent across every unit.
- 56 ounce jar with 3 preset programs: ice crush, icy drink, smoothie
- Intelli-Speed motor control auto-adjusts to jar contents
- Asymmetric blade cuts at four angles
- Self-clean cycle with water and soap
Who it's for
People making daily smoothies or crushed-ice drinks who want serious power without a full-size Vitamix footprint. Not for anyone needing a quiet blender or expecting flawless cosmetic finish on every unit.
What buyers say
From Amazon customer reviews.
Owners who've used a Vitamix say this blender matches it for power and blending consistency while being easier to clean and store. The main complaints are volume during operation and at least one report of a loose trim band on an otherwise functional unit.
Strengths and trade-offs
Drawn from this product's published specifications.
- Blending power and consistency compared favorably to a Vitamix by owners
- Self-clean cycle works with just water and soap
- Compact footprint next to other KitchenAid countertop appliances
- Loud during operation
- At least one report of a loose exterior trim band
- Manual control layout takes some owners a moment to learn
Performance notes
The Intelli-Speed motor senses what's in the jar and holds the selected speed, while the asymmetric blade cuts at four distinct angles and the ribbed jar drives a vortex to pull ingredients down into it. A soft start ramps the motor up gradually to limit splatter, and the self-clean cycle runs on water plus a drop of soap.
Specifications
| Brand | KitchenAid |
|---|---|
| Model | KSB4027PA |
| Dimensions & fit | |
| Item Weight | 12 pounds |
| Item Dimensions D x W x H | 7.6 × 9 × 15.8 inches |
| Capacity & performance | |
| Capacity | 56 fl oz |
| Number of Speeds | 5 |
| Power & efficiency | |
| Wattage | 1200 watts |
| Power Source | Corded electric |
| Voltage | 120 volts |
| Construction & materials | |
| Material | Metal |
| Material Type Free | BPA Free |
| Blade Material | Stainless Steel |
| Color | Passion Red |
| Included components | |
| Included Components | (1) 56 oz BPA-free Blender Jar (1) Blender Jar Lid |
| Warranty & support | |
| Warranty Description | 5 years |
| Other details | |
| Control Type | Knob |
| Is the item dishwasher safe | Yes |
| Recommended Uses For Product | Blending |
| Style | 5 Speed |
| Part Number | KSB4027PA |
| Item Type Name | Blender |
| Other Special Features of the Product | Manual |
Other KitchenAid countertop blenders
How it compares
This product against the closest alternatives we track in countertop blenders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| KitchenAid K400 Variable Speed BlenderThis product | 4.5 / 5 | 1,561 | 4.4 / 5 |
| Ninja BN801 Professional Plus Kitchen SystemNinja | 4.8 / 5 | 14,563 | 4.7 / 5 |
| NutriBullet NBR-1201 12-Piece High-Speed Blender/Mixer SystemNutriBullet | 4.5 / 5 | 26,800 | 4.6 / 5 |
| Vitamix E310 Explorian BlenderVitamix | 4.6 / 5 | 5,483 | 4.4 / 5 |
| Ganiza Smoothie BlenderGaniza | 4.4 / 5 | 5,926 | 4.2 / 5 |
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Questions about the KitchenAid KSB4027PA
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the KitchenAid K400 as powerful as a Vitamix?
Multiple owners with prior Vitamix experience say it matches it in blending power and consistency.
Does the K400 have a self-clean setting?
Yes, add water and a drop of soap to the jar and run the self-clean cycle.
How loud is this blender?
Owners describe it as loud but low in pitch rather than a high whirring sound.