KitchenAid K400 Variable Speed Blender - 56-Ounce Jar

KitchenAid K400 Variable Speed Blender combines a 1.5 peak HP motor with a 56-ounce BPA-free jar and a five-speed control dial. Its ribbed container, asymmetric blade, and Intelli-Speed motor control are designed to keep ingredients moving through the blade during blending.

Core Blender Design

The K400 uses a three-part blending system built around a ribbed jar and an asymmetric blade with four cutting angles. KitchenAid says the arrangement creates a vortex that draws ingredients toward the blade, while Soft Start begins at a slower speed before increasing to the selected setting. KitchenAid's K400 feature page lists the 1.5 peak HP motor, Soft Start, Intelli-Speed control, and four-angle blade.

The dial provides five variable speed settings, and the blender adds three preset programs: Ice Crush, Icy Drinks, and Smoothie. The control layout gives the K400 both repeatable automated cycles and manual adjustment for sauces, frozen mixtures, and other preparations.

Model KSB4028BM Details

The black matte configuration is model KSB4028BM. Its package includes the blender base, a 56-ounce BPA-free blender jar, a jar lid, and a tamper, giving this configuration one more included accessory than KSB4027 versions without a tamper. The US KitchenAid listing identifies model KSB4028BM and its included 56-ounce jar and tamper.

Independent specification listings place the K400 at 9.02 inches deep, 7.59 inches wide, and 15.8 inches high, with a listed weight of 12 pounds. These dimensions describe a full-size countertop blender rather than a compact personal unit, and the tall jar requires clearance beneath upper cabinets.

Home Depot lists a 56-ounce K400 configuration with three preset recipes at $299.99 as of 09/22/2026. The retailer listing identifies the black matte K400 as a 56-ounce, five-speed model with three preset recipes and a $299.99 price.

How It Compares

The K400 sits above entry-level countertop blenders that commonly use smaller containers and fewer automated programs, while remaining below KitchenAid's K400 personal-jar package in included accessories. The KSB4031BM version adds a 16-ounce personal blender jar with a resealable lid while retaining the 56-ounce main jar.

Compared with the KSB4027, the KSB4028BM adds a tamper but keeps the same five-speed control, three preset programs, 56-ounce BPA-free jar, and 1.5 peak HP motor. The practical difference is accessory coverage: KSB4028BM suits recipes that benefit from manual pushing during blending, while KSB4027 includes the base, jar, and lid.

Best Fit and Limits

The KSB4028BM is a full-size variable-speed blender for households that want a large jar, manual speed control, preset cycles, and a supplied tamper. Its 56-ounce capacity and 15.8-inch height favor batch preparation, but the dimensions take more counter and cabinet space than a personal blender.

At $299.99 as of 09/22/2026, the K400 occupies the midrange-to-premium countertop segment. Its strongest catalog advantages are the five-speed dial, three preset programs, 1.5 peak HP motor, 56-ounce jar, and tamper-equipped package; buyers seeking a travel-sized blending setup need the separate KSB4031BM configuration instead.