Compare Jamesdonkey A3 vs Keychron J2 HE Differences Side by Side

Explore the comprehensive side-by-side comparison of the Jamesdonkey A3 and Keychron J2 HE and view their biggest differences. The detailed comparison table allows you to see all the essential features, specifications, and benefits of each keyboard at a glance. Whether you're looking for performance, value, or specific functionalities, this comparison tool helps you make an informed decision.

Model
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Rating	0.0 stars (0 reviews)	1.0 stars (2 reviews)
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Main differences	Released in 2022 Has Clicky, Linear, Tactile switch options Comes with a knob Compatible with both Mac and Windows Features N-key rollover Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 3000 mAh battery Weighs about 1000 g Sized at 40 x 136 x 321 mm Made with a ABS, Polycarbonate, Plastic, PBT case Offers Yes, Rgb RGB lighting	Released in 2026 Has Linear, Tactile, Clicky switch options Utilizes Hall effect sensors Supports QMK firmware Supports VIA configuration Supports Wired, Wired only connectivity Runs at a 8000 Hz polling rate Weighs about 780 g Sized at 31 x 332 x 140 mm Made with a Plastic case Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Score	Scores Performance: 61.4 Build Quality: 66.3 Productivity: 91 Customizability: 85.5 Portability: 79.4	Scores Performance: 89.2 Build Quality: 83 Productivity: 87.5 Customizability: 90.4 Portability: 60.7
Name	Name Jamesdonkey A3	Name Keychron J2 HE
Release year	Release year 2022	Release year 2026
Switch Options	Switch Options Clicky, Linear, Tactile	Switch Options Linear, Tactile, Clicky
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 75%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, 2.4 GHz, Wired, Wireless	Connection Wired, Wired only
Polling Rate	Polling Rate -	Polling Rate 8000 Hz
Battery capacity	Battery capacity 3000 mAh	Battery capacity -
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Gasket Mount	Mount Style Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb, North-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS, Polycarbonate, Plastic, PBT	Case Material Plastic
Keycaps Material	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions 40 x 136 x 321 mm	Dimensions 31 x 332 x 140 mm
Weight	Weight 1000g	Weight 780g