The Oster QuietPro is a Costco-exclusive, full-size blender with a removable plastic cover that fits over the jar to help dampen noise during use. It comes with a 2-liter plastic jar and a removable six-blade assembly. You can adjust the blending speed using a dial or choose from six automatic programs for making smoothies, milkshakes, frozen drinks, salsa, sauces, and cleaning the jar. There's also a Pulse function and a digital display that shows the remaining blending time. It supports hot blending, too, as long as you remove the center cap from the lid to let steam escape.
Our Verdict
The Oster QuietPro is a great multi-purpose blender that handles a wide variety of recipes without making too much noise. It does a very good job of breaking down fibrous ingredients like kale and pineapple, crushes ice with ease, and can blend hot ingredients for soups and sauces. Its sound enclosure is especially useful if you don't want to disturb others while blending. Thicker blends take considerably more effort, though, requiring frequent stops to stir the ingredients despite the smooth final results. Cleaning is fairly straightforward with dishwasher-friendly pieces, but food can get stuck in some hard-to-reach areas around the blade mount.
Sound enclosure keeps blending noise to a minimum.
Breaks down fibrous ingredients like kale into a very smooth consistency.
Can safely blend hot ingredients for soups and sauces.
Crushes ice quickly with very little effort.
Large jar accommodates several servings at once.
Thick spreads require frequent stopping and stirring.
Food can get trapped in the threads around the blade mount.
The Oster QuietPro is a great choice if you usually make smoothies for yourself. It blends smaller portions of fibrous ingredients like kale into a silky consistency, without leaving behind much noticeable grit. You won't have to babysit the blender, either, since ingredients that collect along the sides of the jar slide back down toward the blades without needing to be scraped off. The finished drink also has very little foam compared to blending larger recipes, and the sound enclosure helps keep noise down if you're making a smoothie early in the morning.
Sound enclosure keeps blending noise to a minimum.
Breaks down fibrous ingredients like kale into a very smooth consistency.
Crushes ice quickly with very little effort.
Produces smooth drinks without incorporating much air in smaller batches.
The Oster QuietPro is great for making multiple servings of smoothies at once. Its large jar gives you plenty of room to prepare drinks for the whole family, and it does a good job of breaking down tough, fibrous ingredients like kale. You may need to stop once to scrape ingredients off the sides of the jar, but the finished smoothie is very smooth, with only a few small bits that aren't noticeable when drinking it. The blender does incorporate quite a bit of air into larger batches, though, so your smoothies can turn out fairly foamy.
Breaks down fibrous ingredients like kale into a very smooth consistency.
Crushes ice quickly with very little effort.
Large jar accommodates several servings at once.
Larger batches can turn out noticeably foamy.
The Oster QuietPro is excellent for crushing ice, making it a great option if you regularly prepare frozen cocktails, slushies, or other icy drinks. Its roomy jar lets you make several servings at once, and it breaks down ice with minimal effort. Crushing ice usually makes quite a racket, so the sound enclosure is particularly handy for keeping noise down when you're making drinks for guests or if you just want a little more peace and quiet in your kitchen.
Crushes ice quickly with very little effort.
The Oster QuietPro is excellent for making soups. You can blend ingredients while they're still hot, so there's no need to wait for cooked vegetables and broth to cool before pureeing them. Its large jar also gives you enough room to prepare several servings at once. It handles fibrous vegetables like broccoli and kale well, producing a smooth consistency, though a few small bits may remain. You'll need to remove the center cap from the lid when blending hot ingredients to allow steam to escape.
Breaks down fibrous ingredients like kale into a very smooth consistency.
Can safely blend hot ingredients for soups and sauces.
Large jar accommodates several servings at once.
The Oster QuietPro is good for professional use, but it isn't equally suited to every demanding task. It makes short work of large quantities of ice, while dense mixtures like thick spreads take much more patience, with repeated interruptions needed to get a smooth result. The jar fastens securely to the base, but the mostly plastic construction and loose-feeling controls aren't particularly reassuring for frequent, heavy use. Food can also collect in the threads of the removable blade mount, which adds to the cleaning workload, though most pieces are fully dishwasher safe on the top rack.
Sound enclosure keeps blending noise to a minimum.
Breaks down fibrous ingredients like kale into a very smooth consistency.
Can safely blend hot ingredients for soups and sauces.
Crushes ice quickly with very little effort.
Large jar accommodates several servings at once.
Thick spreads require frequent stopping and stirring.
Food can get trapped in the threads around the blade mount.
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Differences Between Sizes And Variants
The Oster QuietPro is a Costco-exclusive blender available in a single variant, with a black finish and a 2-liter plastic jar. You can see a photo of the label for our unit.
If you discover another variant, let us know in the comments, and we'll update our review.
Popular Blender Comparisons
The Oster QuietPro is a versatile full-size blender with a large jar and a removable plastic cover that helps dampen noise during blending, a feature not widely found on most household blenders. It's quieter than the Hamilton Beach Professional Quiet Blender, which also has a sound enclosure, though the Hamilton Beach performs better with fibrous ingredients. The QuietPro also does a better job of containing noise than the budget-friendly Black+Decker Quiet Blender with Cyclone Glass Jar, which lacks an enclosure but includes a personal blending cup. Within Oster's own lineup, the QuietPro handles thick spreads better than the higher-end Oster Titan Performance, though the Titan has a sturdier build and more reliable speed controls. The more entry-level Oster Pro 1200 is easier to clean and comes with a personal blending cup, though it runs considerably louder.
If you're looking for something versatile, check out our recommendations for the best blenders that can handle everything from smoothies to soups to nut butter. If you mainly make drinks, our best blenders for smoothies list focuses on models that can break down tough ingredients into smooth blends. You can also check out the best quiet blenders if minimizing noise is your top priority.
The Oster Pro 1200 is a better choice than the Oster QuietPro for most everyday blending tasks. The Pro 1200 comes with both a glass pitcher and a personal blending cup, which makes it convenient whether you're making a family-sized recipe or a smoothie to take with you. It's also easier to clean and takes less effort to make smooth nut butter. Its smaller main jar isn't as practical for large batches of frozen drinks, though, and Oster recommends crushing only a handful of ice cubes at a time. The QuietPro can handle larger batches of ice and makes significantly less noise, so it's worth considering if you regularly entertain or find traditional blenders too noisy.
The Hamilton Beach Professional Quiet Blender is a better blender overall than the Oster QuietPro. It's sturdier, has more reliable speed controls, and stronger performance with fibrous ingredients like kale. It's also easier to clean, which makes it more convenient for everyday use. The QuietPro is worth considering if you prioritize quiet operation or regularly make larger batches, though. Its sound enclosure reduces noise more effectively, and its bigger jar gives you more room to make drinks for several people. It's also more practical for hot blending, since the Hamilton Beach has a more restrictive capacity for hot ingredients and requires you to remove its enclosure.
The Black+Decker Quiet Blender with Cyclone Glass Jar is slightly better for everyday blending than the Oster QuietPro. Both are designed to reduce blending noise, but the QuietPro's sound enclosure makes it considerably quieter. Its larger jar is also better suited to making multiple servings, and it can handle much larger batches of ice for frozen drinks. The Black+Decker produces smoother results with fibrous ingredients like kale, though, and it's easier to clean. It also comes with a glass pitcher and a personal blending cup, so it's a better fit if you make a lot of smoothies and shakes for yourself.
The Oster Titan Performance is a better blender than the Oster QuietPro, especially if you prioritize build quality and blending control. Its sturdy glass jar, included tamper, and more dependable speed adjustments make it a better fit for a variety of recipes. It also produces smoother results with larger batches of fibrous ingredients and is easier to clean afterward. The QuietPro has a significant advantage when it comes to noise, though, thanks to its removable sound enclosure. It also makes noticeably smoother nut butter, although neither blender is particularly convenient for preparing thick spreads.
Test Results
This blender has decent build quality, though some parts feel a little cheap. The motor base is made entirely of plastic, and while the speed dial feels sturdy, the buttons are somewhat loose and wobbly. The jar locks into place with a click, but our tester found that the blender can still run without the jar attached, which is a safety concern. The base also moves slightly during blending, and our tester found that holding it steady seemed to help the ingredients blend more effectively. The sound enclosure has a rubber seal around the base to help contain noise, though spills could be difficult to clean out of this area. It also comes with a three-year limited warranty covering manufacturing defects, but not normal wear and tear or damage from misuse.
The Oster QuietPro has a large 2-liter jar, though the maximum fill line for liquids is slightly lower at 1.75 liters. That's still plenty of room for making several servings of smoothies, soups, or frozen drinks at once. However, it doesn't come with a smaller jar for individual servings.
The jar is BPA-free, lightweight, and easy to handle. It's dishwasher-safe, though Oster recommends using the top rack only. The motor base and sound enclosure aren't dishwasher-safe, so you'll need to wipe those down separately.
The Oster QuietPro has a removable six-blade assembly, with four sharp blades near the top and two duller blades underneath. You can put the assembly in the dishwasher's top rack, though you'll need a bristle brush to clean underneath the blades if washing it by hand.
This blender has a two-part lid with a silicone seal that fits snugly onto the jar, keeping it securely in place while blending. The removable center cap lets you add ingredients without taking off the entire lid and allows steam to escape when blending hot foods.
This blender handles smaller batches of fibrous ingredients very well, producing smooth results with only a few tiny bits of kale left behind. Some of the mixture gets pushed up the sides of the jar, but it quickly falls back toward the blades on its own. It also incorporates very little air, resulting in a drink that isn't overly foamy.
This blender makes very consistent smoothies in large batches, though it needs a little help along the way. Some ingredients get stuck near the top of the jar rather than being drawn into the blades, so you'll need to stop once to scrape them down. It also incorporates quite a bit of air, leaving the mixture noticeably foamier than when blending smaller batches. Still, the finished smoothie has a pleasant, smooth texture, with only a few tiny bits of kale that you won't really notice when drinking it.
This blender is excellent at crushing ice. A few pulses, followed by a short run at a manual speed, are enough to break down the cubes with very little effort on your part. The resulting ice has a fine, snow-like consistency that's great for frozen drinks or snow cones, though some of it clumps together. Fortunately, these clumps fall apart easily, so they shouldn't be much of a bother when serving.
Making nut butter with the Oster QuietPro is a fairly tedious process, though the results are excellent. You'll spend a lot of time stopping the blender and moving the mixture around with a spatula to help the nuts break down. This also makes the noise enclosure less practical, since you'll constantly need to open it to access the jar. The finished spread is impressively smooth and creamy, though, with only a few tiny pieces that are barely noticeable when eating it. The mixture gets quite warm during blending, but the oils remain mostly incorporated.
This blender is impressively quiet for a full-size blender, thanks to its sound enclosure. Even at its highest speed, the noise is fairly manageable, so it's less likely to disrupt conversations or bother others in your household. Without the enclosure, though, it gets considerably louder, so you'll want to keep it in place whenever possible. You can hear how loud it gets without the enclosure in this video.
This blender has a wide range of blade speeds, but its manual speed control has some frustrating limitations. During testing, the blades gradually sped up on their own, even when we kept the dial at its lowest setting. This makes it difficult to maintain a slower speed for more delicate recipes, since you'll need to repeatedly stop and restart the blender or use the Pulse function to keep it from running at full speed.
This blender has a good range of controls: 10 speed settings you can adjust with a dial, plus a Pulse function for more control over your blends. It also has six automatic programs for smoothies, milkshakes, frozen drinks, salsa, sauces, and cleaning. These programs automatically adjust the blade speed and pause at different intervals, so you don't need to make adjustments yourself. The display shows the remaining blending time, though you can't set a custom timer. You can also blend hot ingredients, but you'll need to remove the filler cap from the lid to let steam escape.
This blender is fairly easy to clean. The jar and lid don't have many crevices, and you can remove the blade assembly to clean underneath the blades. You'll need to be careful when handling the sharp blades, though, and the blade mount has some awkward spots where food can get stuck. You'll also want to make sure the screw threads are free of residue before putting everything back together, since trapped debris can make the assembly difficult to unscrew later.