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  3. Porta Pro Headset vs AL4 Freedom Mini

Koss Porta Pro Headset vs Miiego AL4 Freedom Mini

What Porta Pro Headset does better (2) and where AL4 Freedom Mini wins (1) — every spec side by side.

Koss Porta Pro Headset
Koss · 2024Porta Pro Headset
2 advantages≈ $75
vs
Miiego AL4 Freedom Mini
Miiego · 2025AL4 Freedom Mini
6.2Score
1 advantage≈ $75
Higher score
4.0Noise control & calls5.9

Why is Porta Pro Headset better than AL4 Freedom Mini?

  1. Lowest frequency15 Hz vs 20 Hz+33%
  2. Highest frequency25,000 Hz vs 20,000 Hz+25%

Why is AL4 Freedom Mini better than Porta Pro Headset?

  1. Weight59 g vs 41 g+44%
Specifications

Side by side

Sound
FitOn-earOver-ear
Lowest frequency15 Hz20 Hz
Highest frequency25,000 Hz20,000 Hz
Impedance60 Ω—
Sensitivity101 dB—
Adjustable equaliser—Yes
Noise control
Active noise cancellingNoNo
Noise reduction for calls—Yes
Battery & charging
Battery life—36 h
Battery capacity—250 mAh
Charging time3 h—
Connectivity
WirelessNoYes
Bluetooth version—5.3
Bluetooth codecs—AAC, SBC
Hi-res codec (LDAC / aptX HD / LHDC)—No
aptX—No
LDAC—No
Multipoint (two devices)—Yes
USB-C—Yes
3.5 mm jack / AUXYesYes
Low-latency game mode—Yes
Smart & streaming
Voice assistant—Google Assistant, Siri
Companion app—Yes
Design & build
Weight59 g41 g
Protection rating—IPX6
Water resistance (IPx)—IPx6
FoldableYesYes
ColoursBlack—
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