Our recommendations are made independently through Research & Testing. We may receive commissions from purchases made via our links.

Amesser A-65 vs Longzon 4-stage Side-by-Side Comparison

The Amesser A-65 sharpens more effectively than the Longzon 4-stage, but the edge it produces is inferior. Read our detailed comparison.

By , , and ·Updated

Amesser A-65

Longzon 4-stage

Amesser A-65 vs Longzon 4-stage: A Side-by-Side Comparison

Overall Verdict

The Amesser A-65 and the Longzon 4-stage sharpeners are both of a decent size and solidly constructed. Both also sport a tapered base which slightly affects their ability to keep their balance during use.

The Amesser did a little better in our speed and sharpness tests, though arguably only because the Longzon was below average. On the other hand, the Longzon removed far less steel and left a much smoother and more even edge.

All in all, the Amesser is the slightly better choice. If you prefer the design of the Longzon but want better performance, check out its identical twin: the Mueller KS-4ST.

Ranking by
OverallScore Performance50% Design15% Ease of Use35% ScoreOverall 50%Performance 15%Design 35%Ease of UseAmesser A-65Longzon 4-stage7.76.39.39.17.05.69.18.2
Showing: 2/2 Items

Pros & Cons

  • Affordable
  • Instinctive and easy to use
  • Well-built with a solid design
  • Grippy and comfortable handle
  • Safety glove included
  • Sleek design
  • Substantial, accommodative size
  • Fine, smooth knife edge
  • Inclusion of protective gloves
  • Slot for scissors
  • Tapered base
  • High center of gravity
  • Tall base
  • Slow sharpening
  • Ineffective slot layout

Key Specs

Stages
3
3
Scissor sharpene
No
Yes
Abrasives
Diamond, tungsten carbide, ceramic
Diamond, tungsten carbide, ceramic
Grit size
Coarse, Medium, Fine
Coarse, Medium, Fine
Dimensions
L7.9 x W1.9 x H2.9 inches
L9.3 x W1.8 x H3.1 inches

Where to Buy

Price at publication
$16.60
$13.30

*You help support HealthyKitchen101's product testing and reviews by purchasing from our retail partners.


Analysis and Test Results

Performance

Overall Performance Scoring
6.3
5.6

Sharpening Time to Cut a Lemon

5.2
1.0
Sharpening Time
2 minutes
3 minutes 10 seconds
Cutting Feel
Swift and smooth
Swift and smooth

Material Retention

6.0
9.0
Metal residue on an abrasive slot on the Amesser handheld knife sharpener
Metal residue on an abrasive slot on the Amesser handheld knife sharpener
A bowl containing metal sharpening residue next to the base of the Amesser A-65 manual knife sharpener
Metal residue in the sharpening slots of the Longzon knife sharpener
Metal residue in the sharpening slots of the Longzon knife sharpener
The Longzon household knife sharpener next to a bowl containing metal dust residue
Sharpening Time
1 minute
1 minute

Maximum Sharpness Achieved

7.0
6.0
Sharpening Time
6 minutes
6 minutes
Sharpness Level
8 - (Chicken breast, two swipes)
7 (ripe tomatoes)

Edge Smoothness

7.7
9.0
Close up view in vignette of the knife blade and edge after sharpening with the Amesser A-65 knife sharpener
Longzon Knife Sharpener Edge Smoothness

Design

Overall Design Scoring
9.3
9.1

In the Box

The Amesser sharpener next to its package box, a glove, and promotional leaflets
The Longzon knife sharpener lying next to its package box, instruction leaflet, and two gloves

Dimensions

The Amesser handheld sharpener with arrows and figures showing its dimensions
The Longzon household sharpener with arrows and figures showing its dimensions.
Length
7.9" (20.1 cm)
9.3" (23.6 cm)
Width
1.9" (4.8 cm)
1.8" (4.6 cm)
Height
2.9" (7.4 cm)
3.1" (7.9 cm)
Weight
6.4 oz (183 g)
8.7 oz (246 g)

Build Quality

9.2
9.1
The Amesser’s working section, with the abrasives detached from the base
The Amesser’s working section, with the abrasives detached from the base
The base of the Amesser, when the working section has been detached
The Amesser A-65’s abrasive section as detached from the base
The Longzon sharpener standing on a surface

Working Section

The working section of the Amesser A-65 with 3 abrasive slots: Prep, Sharpen, and Fine
Longzon Knife Sharpener Working Section
Levels of Sharpening
Prepare, Sharpen, Polish
Sharpen, Hone, Polish
Abrasive
Diamond-coated rods, tungsten steel blades, ceramic rods
Tungsten carbide blades, diamond rods, ceramic rods
Mechanism
Pull-through
Pull through
Sharpening Angle
20°
20 degrees

Base

The Amesser A-65 knife sharpener lying on a surface, with its base visible
The Amesser A-65 knife sharpener lying on a surface, with its base visible
Close-up view of the Amesser sharpener’s base pad
The Amesser A-65 manual sharpener on a salt-sprinkled surface, its base in full view
The Longzon sharpener lying on a surface with its base in full view
The Longzon sharpener lying on a surface with its base in full view
Part of the base of the Longzon manual knife sharpener
Material
ABS plastic
ABS
Feet Type
Non-slip rubber base
EVA feet

Grip

9.5
9.0
The grip of the Amesser sharpener
The grip of the Amesser sharpener
A hand gripping on the Amesser A-65 manual sharpener
Longzon Knife Sharpener Grip
Material
ABS plastic
ABS, TPR

Usability

Overall Usability Scoring
9.1
8.2

Slot Arrangement

10
7.0
The working section on the Amesser A-65, with 3 slots featuring diamond rods, tungsten carbide blades, ceramic rods
The working section on the Longzon handheld sharpener, with 1 slot for scissors and slots 2, 3, 4 for knives

Insertion

9.0
9.0
Amesser A-65 Manual Knife Sharpener Insertion 1
Amesser A-65 Manual Knife Sharpener Insertion 1
Top view of a knife being sharpened with the Amesser A-65, the sharpener being held in one hand
Top view of a kitchen knife being sharpened using the Longzon with 2 hands holding them

Pulling Through

9.5
8.0
A hand holding the Amesser knife sharpener and sharpening a kitchen knife with it
A kitchen knife being sharpened with the Longzon, and the 2 hands that hold the knife and the sharpener

Stability on a Clean Surface

9.0
8.5
Top view of a knife being sharpened with the Amesser 3-slot knife sharpener, with the user’s two hands visible
A hand holding the Longzon on a kitchen countertop and sharpening a knife with it.

Stability on a Wet and Dirty Surface

7.5
8.0
Two hands holding and sharpening a kitchen knife with the Amesser 3-slot knife sharpener on a salt-sprinkled countertop
A kitchen knife being sharpened with the Longzon on a countertop with salt particles

Behind the Comparison

Headshot of Anh Ngo
Anh NgoSenior Editorial Director

Anh Ngo is a writer with 9 years experience at different media outlets, covering from public news and events to product testing and analysis. At HealthyKitchen101, she works across different departments, communicating closely with its network of writers, editors, and health, tech, and search engine experts to provide a meaningful and pleasant reading experience for visitors.

Headshot of Lap Vo
Lap VoTest Lead

Lap is Head of the Research, Testing, and Review Team (RTR Team) at HealthyKitchen101.com, where he directs and supervises the testing of kitchen gadgets and appliances.

Headshot of Nguyen Ntk
Nguyen NtkVisual Specialist

Nguyen Ntk is a graphic designer, photographer, and videographer whose philosophy centers around respecting and celebrating the beauty of reality. Through his lenses, Nguyen strives to capture the true essence of objects and events, showcasing and highlighting authentic features without distortion or exaggeration.

Related Comparisons