The catch
Nama J2
The manual still says fibrous celery and similar produce must be cut into short pieces. Loading a hopper does not skip preparation.
Side by side
Nama J2 vs Kuvings REVO830: Nama lets you preload recipes, and REVO cuts celery prep but you still feed it by hand
Quick verdict
If loading a prepared recipe and feeding less often matters most, Nama J2 is the pick. If long celery or carrot preparation is the chore you want to cut down and you are content to feed ingredients by hand, Kuvings REVO830 is the pick. The J2 is lighter and shorter for storage. The REVO830 comes with its smoothie and sorbet attachments, yet it cannot be converted into an AUTO10-style hopper machine.
Before you buy
Why, and what it costs you
Chopping less can still leave you standing beside the machine longer
If you drink celery regularly and dislike cutting stalks, the dedicated route on the REVO830 goes straight at the prep task, though you still feed the produce yourself. The J2 wants fibrous ingredients cut short first, after which its hopper handles feeding. For a parent making breakfast nearby that is a useful choice: do the knife work up front and use the J2, or cut fewer stalks and stay involved with the REVO. Neither description proves a shorter total morning. Which fits better depends on whether chopping or repeated feeding is the part you would rather stop doing.
Where this comes from
The J2 preparation instructions call for short fibrous pieces, and the REVO830 documents a separate auto-cut route plus manual insertion. What is compared here is how the work is divided. Equal processing speed and fewer total minutes are not assumed.
The catch
Kuvings REVO830
Ingredients go in by your hand while the machine runs. A later switch to the AUTO10 hopper is not compatible.
Nama J2
- Why pick it
- You like to prepare one recipe up front and let the hopper do the feeding while you stay nearby.
- You put the machine away often and a 12.1 lb, 17.7-inch-high body suits you.
- The catch
- The manual still says fibrous celery and similar produce must be cut into short pieces. Loading a hopper does not skip preparation.
Kuvings REVO830
- Why pick it
- Long produce such as celery is something you juice often, and you want the dedicated auto-cut route even though feeding stays manual.
- Included smoothie and sorbet attachments matter to you, and you do not expect to add a batch hopper down the line.
- The catch
- Ingredients go in by your hand while the machine runs. A later switch to the AUTO10 hopper is not compatible.
We may earn a commission from qualifying Amazon purchases. How we make money
What this page compares
Nama J2 and Kuvings REVO830, compared on celery prep, shared recipes and daily storage. See which design takes away the work that really slows you down.
Aimed at the same committed home buyer, these premium slow juicers automate different parts of preparation. The J2 preloads a batch, whereas the REVO830 stays with manual feeding and adds a dedicated auto-cut route for long produce.
Which one fits
Pick the situations that sound like you
Several servings made from one prepared recipe
After loading, the J2 cuts down on repeated manual feeding.
- Nama J2
- Better fit
- Kuvings REVO830
- Similar
Long celery stalks, and you dislike prepping with a knife
That task is what REVO’s dedicated auto-cut route is for, and feeding is not automated.
- Nama J2
- Similar
- Kuvings REVO830
- Better fit
Making different recipes one after another, on purpose
Hand insertion gives you control over the order. Cleaning is still needed.
- Nama J2
- Similar
- Kuvings REVO830
- Better fit
Every day the machine returns to a cupboard
The J2 is both lighter and shorter, but you still need to check the whole storage opening.
- Nama J2
- Better fit
- Kuvings REVO830
- Caution
In practice
Differences you will notice
Chopping less can still leave you standing beside the machine longer
If you drink celery regularly and dislike cutting stalks, the dedicated route on the REVO830 goes straight at the prep task, though you still feed the produce yourself. The J2 wants fibrous ingredients cut short first, after which its hopper handles feeding. For a parent making breakfast nearby that is a useful choice: do the knife work up front and use the J2, or cut fewer stalks and stay involved with the REVO. Neither description proves a shorter total morning. Which fits better depends on whether chopping or repeated feeding is the part you would rather stop doing.
How we worked this out
The J2 preparation instructions call for short fibrous pieces, and the REVO830 documents a separate auto-cut route plus manual insertion. What is compared here is how the work is divided. Equal processing speed and fewer total minutes are not assumed.
When family members want different recipes, loading everything together is worth less
When everyone drinks the same recipe, the prepared hopper of the J2 is a natural fit. When one person wants plain celery and another a fruit mix, treating the whole household as one batch gains you less. Keep the recipes apart and settle the order before you load. The manual feed on the REVO gives you direct control over what goes in next, which can suit that staged routine, though changing recipes still calls for proper cleaning. The J2 can also make separate batches, but its main convenience counts for less when every small drink needs its own load. Neither a quick rinse nor a recipe order guarantees that allergens stay separated.
How we worked this out
This reasoning sets batch mixing against differing recipe preferences. It makes no claim of independent internal paths, complete ingredient separation or faster recipe changes. Residue stays in both machines and has to be cleaned properly.
Making sorbet now and then can clash with everyday storage
The REVO comes with its sorbet equipment, but the whole machine is 4.4 lb heavier and 1.3 inches taller than the J2. A household that juices daily and makes sorbet occasionally should weigh that everyday handling against buying Nama’s attachment on its own. If the machine will sit on an open counter, the storage difference may hardly matter and the included kit on the REVO is more useful. If it has to be put away after breakfast, measure the shelf and think about the empty lift first. Do not pick the REVO expecting an AUTO10 hopper to settle the feeding compromise later, because Kuvings states outright that it is incompatible.
How we worked this out
16.5 minus 12.1 equals 4.4 lb, and 19 minus 17.7 equals 1.3 inches. That the accessory is included and the hopper is incompatible are verified facts. No price saving or physical-ability guarantee is inferred.
Option A
Nama, J2
J2
You like to prepare one recipe up front and let the hopper do the feeding while you stay nearby.
- Best for
- You like to prepare one recipe up front and let the hopper do the feeding while you stay nearby.
Facts we checked
- Feeding job: Preloaded hopper handles the prepared batch
- Long fibrous ingredients: Cut to 2 to 3 inches or less
- Later hopper conversion: Batch feeding is part of the design
- Moving between uses: 12.1 lb
Option B
Kuvings, REVO830
REVO830
Long produce such as celery is something you juice often, and you want the dedicated auto-cut route even though feeding stays manual.
- Best for
- Long produce such as celery is something you juice often, and you want the dedicated auto-cut route even though feeding stays manual.
Facts we checked
- Feeding job: Ingredients fed manually through the chosen chute
- Long fibrous ingredients: Dedicated auto-cut chute for long produce
- Later hopper conversion: AUTO10 hopper is not compatible
- Moving between uses: 16.5 lb
Spec by spec
Where they really differ
| Spec | Nama J2 | Kuvings REVO830 | In practice |
|---|---|---|---|
| Feeding job | Preloaded hopper handles the prepared batch | Ingredients fed manually through the chosen chute | Decide which part of the routine you want automated. |
| Long fibrous ingredients | Cut to 2 to 3 inches or less | Dedicated auto-cut chute for long produce | The batch design of the J2 leaves that chopping instruction in place. |
| Later hopper conversion | Batch feeding is part of the design | AUTO10 hopper is not compatible | Buying the REVO gives you no simple path to a hopper upgrade. |
| Moving between uses | 12.1 lb | 16.5 lb | Lifted empty, the J2 is 4.4 lb lighter. |
| Closed body height | 17.7 inches | 19 inches | The 1.3-inch gap can settle assembled storage. |
| Sorbet preparation | Optional sorbet attachment | Blank strainer included | Put a price on the preparation set you really plan to use. |
Trade-offs
What each pick costs you
With Nama J2
- Making sorbet takes an optional attachment, and the juicing parts must be washed by hand.
With Kuvings REVO830
- It weighs 16.5 lb and stands 19 inches high, so it takes more lifting effort and storage height than the J2.
Change of plan
When the answer changes
You would rather prep a batch up front
Go with Nama J2. The J2 cuts down on feeding, but cutting fibrous produce and hand-washing stay.
Less stalk prep matters more to you than hopper feeding
Go with Kuvings REVO830. The REVO automates the cutting at the chute, and you stay involved while it runs.
You assume either machine will guarantee that allergens are kept separate
Neither model fits. That guarantee is not established by a shared juicing path and an ordinary rinse.
Decision guide
Before you buy
Less morning preparation is the goal, but cutting back on chopping and cutting back on time at the feed tube lead to different machines.
What this page can’t tell you
- We establish no winner on total preparation time, extraction, taste, nutrition or noise.
- The different-recipe examples are about preference and not about allergy-safe preparation.
- Handling long produce still means following the manufacturer’s specific preparation rules.
By the numbers
What the data shows
What we found across the juicers we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Nama J2 |
|
| |
| Kuvings REVO830 |
|
|
Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Nama J2
You like to prepare one recipe up front and let the hopper do the feeding while you stay nearby.
You put the machine away often and a 12.1 lb, 17.7-inch-high body suits you.
See price & reviews on AmazonKuvings REVO830
Long produce such as celery is something you juice often, and you want the dedicated auto-cut route even though feeding stays manual.
Included smoothie and sorbet attachments matter to you, and you do not expect to add a batch hopper down the line.
See price & reviews on AmazonEach link opens in a new tab.
We may earn a commission from qualifying Amazon purchases. How we make money