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Compare Knife Lab Dolphins75 vs Jamesdonkey R4 Differences Side by Side

This comparison is for buyers deciding between two aluminum 75% gasket mount keyboards at different value propositions. The Knife Lab Dolphins75 is a wired-only DIY kit focused on a specific typing feel, while the Jamesdonkey R4 is a fully-featured pre-built with triple-mode connectivity. The decision hinges on whether you prioritize wireless flexibility and out-of-box readiness or a dedicated wired build with VIA support.

70
[In Stock] Dolphins75 75% Mechanical Keyboard
69
JAMESDONKEY R4 Gasket QMK Wireless Mechanical Keyboard

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  • Released in 2022
  • Supports VIA configuration
  • Features N-key rollover
  • Supports Wired, Wired only connectivity
  • Runs at a 1000 Hz polling rate
  • Weighs about 2400 g
  • Sized at 20 x 327 x 150 mm
  • Offers No RGB lighting
  • Released in 2024
  • Comes with a knob
  • Provides dedicated media keys
  • Supports QMK firmware
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 4000 mAh battery
  • Weighs about 1900 g
  • Sized at 45 x 150 x 329 mm
  • Features PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Scores
  • Performance: 68.8
  • Build Quality: 72.7
  • Productivity: 61.4
  • Customizability: 69.3
  • Portability: 61.1
Scores
  • Performance: 54.6
  • Build Quality: 67.3
  • Productivity: 62.7
  • Customizability: 79.9
  • Portability: 76.9
Name
Knife Lab Dolphins75
Name
Jamesdonkey R4
Release year
2022
Release year
2024
Switch Options
-
Switch Options
-
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
Connection
Wired, Wired only
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
-
Battery capacity
-
Battery capacity
4000 mAh
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Gasket Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Backlight
 
Rgb, South-face
Case Colors
Case Colors
Case Material
Aluminum
Case Material
Aluminum
Keycaps Material
-
Keycaps Material
PBT
Dimensions
20 x 327 x 150 mm
Dimensions
45 x 150 x 329 mm
Weight
2400g
Weight
1900g
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Pros and Trade-offs

Your primary need dictates the choice. For a customizable, wired-only typing project where you select every component, the Knife Lab Dolphins75 kit is the clear path. If you want a versatile, ready-to-use keyboard with wireless freedom, RGB, and a knob straight out of the box, the Jamesdonkey R4 is the more practical option. Consider your willingness to build versus your need for immediate, flexible functionality.

Knife Lab Dolphins75

  • +Includes comprehensive modding materials like Poron foam, IXPE switch pad, and gasket-foam.
  • +Confirmed 1000Hz polling rate and NKRO for reliable wired performance.
  • +VIA support allows for easy software-free key remapping.
  • +Sold as a barebones kit, offering flexibility in switch and keycap choice.
  • −Wired-only connectivity limits placement and device switching.
  • −Significantly heavier at 2400g, making it less portable.
  • −Does not include switches, keycaps, or RGB lighting.

Jamesdonkey R4

  • +Triple-mode connectivity with Bluetooth, 2.4GHz wireless, and wired USB.
  • +Comes as a complete pre-built with PBT keycaps and south-facing RGB lighting.
  • +Includes a multimedia volume knob for quick adjustments.
  • +Lighter weight (1900g) and includes a large 4000mAh battery for wireless use.
  • −Pre-built nature offers less initial customization than a barebones kit.
  • −Vendor description mentions a self-developed web driver, but reliance on proprietary software may be a con for some.
  • −Wireless modes, while convenient, may not match the absolute consistency of a dedicated wired connection for competitive gaming.

Which Keyboard Is Better for Your Needs?

The Jamesdonkey R4 wins for mobile and office-centric uses due to its wireless modes, lighter weight, and pre-built convenience. The Knife Lab Dolphins75 is the choice for stationary, performance-focused setups like gaming and for enthusiasts who want to build and mod their keyboard from the ground up. For programming, both are equally capable due to their programmable firmware and efficient layouts.

GamingKnife Lab Dolphins75
  • •The Dolphins75 has a specified 1000Hz polling rate for consistent wired performance.
  • •Its listing confirms N-Key Rollover (NKRO) for simultaneous key presses.
  • •The Jamesdonkey R4 vendor page mentions a 2ms response time for low-latency wireless, but the Dolphins75's wired connection typically offers more consistent latency.
OfficeJamesdonkey R4
  • •The Jamesdonkey R4 offers Bluetooth and 2.4 GHz wireless for easy device switching.
  • •It includes a multimedia volume knob for quick audio control.
  • •It comes as a pre-built unit with PBT keycaps, ready to use immediately.
ProgrammingTie
  • •Both keyboards support QMK/VIA for key remapping and macros, essential for workflow customization.
  • •Both use a 75% layout, preserving arrow and navigation keys in a compact form.
  • •The Dolphins75 is a kit, allowing for switch choice, while the R4 is pre-built with specified switches.
TravelJamesdonkey R4
  • •The Jamesdonkey R4 is lighter at 1900g compared to the Dolphins75's 2400g.
  • •Wireless connectivity eliminates the need to carry a cable or be near a USB port.
  • •Its 4000mAh battery supports cordless use.
ModdingKnife Lab Dolphins75
  • •The Dolphins75 is sold as a DIY kit, intended for custom assembly with your own switches and keycaps.
  • •Its vendor description details included modding components like a Poron bottom foam, IXPE switch pad, and Poron gasket-foam.
  • •The kit includes multiple plate options (PC plate mentioned) and supports a solder PCB for further customization.
Content CreationJamesdonkey R4
  • •The Jamesdonkey R4 features south-facing RGB backlighting and a light strip for visual appeal on stream or video.
  • •The multimedia knob allows for quick scrubbing or volume adjustment during editing.
  • •Wireless operation reduces cable clutter on a production desk.

Frequently Asked Questions (FAQ)

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