Compare DALI IO-4 vs Panasonic M500B vs Sennheiser PXC 550-II
Connectivity
Ports
3.5mm + USB-C
3.5mm, USB-C
Micro-USB
Wireless Connectivity
Bluetooth 5.0
Bluetooth 5.0
Bluetooth 5
Wireless Range
10 m
Construction
Cable
1.2 m detechable
Colors
Army Green, Chalk White, Iron Black, Caramel White
Black, White
Drivers
50 mm free edge paper fibre cone
40 mm
Dynamic, 32mm
Form Factor
Over-ear headphones, wireless headphones
Over-ear wireless headphones
Headphone Type
Closed headphones, Dynamic headphones
Closed headphones, Dynamic headphones
Dynamic headphones
Magnet
Neodymium
Material
Closed back circumaural (over ear)
Microphone
MEMS
Dimensions
Size | Depth
63 mm
Size | Height
174 mm
Size | Width
136 mm
Weight
320 g
316 g
227 g
Function
Audio
Base Reactor
Bluetooth Codecs
AAC, aptX, aptX HD
SBC, AAC
SBC, aptX, aptX Low Latency, AAC
Bluetooth Profiles
A2DP, AVRCP, HSP, HFP
Fast Charging
15 minutes for 1.5 hours
Noise Cancellation
No
No
Weather Resistance
IP53
Performance
Battery Life
60 h
30 h
20 h (ANC + A2DP) / 30 h (ANC + wired)
Charging Time
2.5 h
4 h
Frequency Response
10Hz - 20kHz
20Hz - 20kHz
17Hz - 23kHz
Impedance
25 ohms (Via 3.5mm)
27 ohms
Active: 490 ohms / Passive: 46 ohms
Max Sound Level
100 dB
Microphone Frequency Response
50Hz - 10kHz
Sensitivity
200 mV rms / 175 mV rms
100 dB / mW
110 dBSPL
Production
Debut
2019-10
2020 CES
2019 IFA
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