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| Keychron J2 HE | Jamesdonkey A3 | Epomaker HE75 V2 |
88 Overall/ Value 88.0Build Quality 83.0Customizability 89.3Performance 89.1Productivity 87.6Portability 60.4![]() | 79 Overall/ Value 78.6Build Quality 66.1Customizability 84.7Performance 61.5Productivity 91.0Portability 79.0![]() | 73 Overall/ Value 73.1Build Quality 62.6Customizability 65.7Performance 95.0Productivity 82.7Portability 91.3![]() |
1.0 stars (2 reviews) | 0.0 stars (0 reviews) | 4.9 stars (15 reviews) |
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Name Keychron J2 HE | Name Jamesdonkey A3 | Name Epomaker HE75 V2 |
Release year 2026 | Release year 2022 | Release year 2026 |
Switch Options Linear, Tactile, Clicky | Switch Options Clicky, Linear, Tactile | Switch Options Linear, Magnetic |
Profile Normal Profile | Profile Normal Profile | Profile Normal Profile |
Hot Swappable | Hot Swappable | Hot Swappable |
Layout Size 75% | Layout Size 75% | Layout Size 75% |
Layout Standard ANSI | Layout Standard ANSI | Layout Standard ANSI |
Layout Ergonomics Normal | 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 Wired, Wired only | Connection Bluetooth, 2.4 GHz, Wired, Wireless | Connection Bluetooth, 2.4 GHz, Wired, Wireless |
Polling Rate 8000 Hz | Polling Rate - | Polling Rate 8000 Hz |
Battery capacity - | Battery capacity 3000 mAh | Battery capacity 8000 mAh |
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 Gasket Mount | Mount Style Gasket Mount | Mount Style Gasket Mount |
Screw in Stabilizers | Screw in Stabilizers | Screw in Stabilizers |
Sound Dampening | Sound Dampening | Sound Dampening |
Backlight Rgb, North-face | Backlight Rgb | Backlight Rgb, South-face |
Case Colors | Case Colors | Case Colors |
Case Material Plastic | Case Material ABS, Polycarbonate, Plastic, PBT | Case Material ABS |
Keycaps Material PBT | Keycaps Material PBT | Keycaps Material PC |
Dimensions 31 x 332 x 140 mm | Dimensions 40 x 136 x 321 mm | Dimensions - |
Weight 780g | Weight 1000g | Weight 1000g |
The Keychron J2 HE is a wired 75% layout keyboard designed for users who want a fast, precise typing or gaming experience with magnetic Hall Effect switches. It suits gamers needing low input lag and typists who value quiet, stable keys with customization options. Its hot-swappable magnetic switches allow easy modification without soldering, but compatibility is limited to Keychron’s own magnetic switches.