Versus Engine
Keychron K3 HE vs QuadCast 2 S
Specs, price and the one trade-off that actually decides it — Keychron K3 HE against QuadCast 2 S, side by side.
Cheaper to start
Tie
Both start at a similar price.
Rated higher
Keychron K3 HE
8.8 vs 0.0 on our design scale.
Standout
Keychron K3 HE
Magnetic Hall Effect switches

Keychron K3 HE
Low-profile mechanical keyboard with magnetic analog (Hall effect) switches, allowing per-key actuation adjustment and analog input. Listed in this index as a setup peripheral for desk-based local AI workstations.
Where it wins, where it doesn't
Pros
- Magnetic Hall Effect switches
- Ultra-low profile design
- Customizable actuation points
Cons
- Battery life is shorter at 1000Hz polling
- ABS keycaps on standard variants
Specifications
- Connection Type—
- connectivity2.4 GHz Wireless
- Element—
- firmwareQMK open-source
- frame_materialFull Metal
- Frequency Response—
- keycap_materialLow profile double-shot PBT
- plate_materialCNC aluminum
- Polar Pattern—
- polling_rate8K
- profilelow-profile
- Self-noise (RMS)—
- Sensitivity—
- SNR—
- switch_foamPremium acoustic foams such as sound absorbing foam and latex
- switch_typeMagnetic Switch
- switchesmagnetic analog (Hall effect)
- typemechanical-keyboard
- Weight—
QuadCast 2 S
QuadCast 2 S, a versatile USB-C microphone with multiple polar patterns
Where it wins, where it doesn't
Pros
- Offers multiple polar patterns for versatile recording needs
- Lightweight and portable design
- USB-C connectivity for easy setup
Cons
- Higher price compared to more specialized microphones
Specifications
- Connection TypeUSB-C, 3.5mm headphone output
- connectivity—
- ElementThree 14mm electret condenser capsules
- firmware—
- frame_material—
- Frequency Response20Hz - 20kHz
- keycap_material—
- plate_material—
- Polar PatternStereo, Omnidirectional, Cardioid, Bidirectional
- polling_rate—
- profile—
- Self-noise (RMS)≤-95dBFS (A-weighted)
- Sensitivity-36dB (1V/Pa at 1kHz)
- SNR≥ 90dB (1kHZ, RL=∞)
- switch_foam—
- switch_type—
- switches—
- type—
- WeightWeight (Microphone): 0.55 lb
