Compare Panasonic M500B vs DALI IO-4 vs Sennheiser HD 820
Variants
HD 820
HDV 820
Connectivity
Ports
3.5mm, USB-C
3.5mm + USB-C
[Input] 6.35 mm + 4.4 mm + XLR-4 | [Output] XLR, RCA, Coax, Optical, USB-B
Wireless Connectivity
Bluetooth 5.0
Bluetooth 5.0
Wireless Range
10 m
Construction
Cable
1.2 m detechable
3 m
Colors
Black, White
Army Green, Chalk White, Iron Black, Caramel White
Drivers
40 mm
50 mm free edge paper fibre cone
Form Factor
Over-ear wireless headphones
Over-ear headphones, wireless headphones
Headphone Type
Closed headphones, Dynamic headphones
Closed headphones, Dynamic headphones
Magnet
Neodymium
Material
Closed back circumaural (over ear)
Speakers
Dynamic, closed
Dimensions
Weight
316 g
320 g
Function
Audio
Base Reactor
Bluetooth Codecs
SBC, AAC
AAC, aptX, aptX HD
Bluetooth Profiles
A2DP, AVRCP, HSP, HFP
Fast Charging
15 minutes for 1.5 hours
Noise Cancellation
No
No
Weather Resistance
IP53
Performance
Battery Life
30 h
60 h
Charging Time
4 h
2.5 h
Frequency Response
20Hz - 20kHz
10Hz - 20kHz
103 dB at 1 kHz, 1V
Impedance
27 ohms
25 ohms (Via 3.5mm)
300 ohms
Max Sound Level
100 dB
103 dB at 1 kHz, 1V SPL
Sensitivity
100 dB / mW
200 mV rms / 175 mV rms
Production
Debut
2020 CES
2019-10
Made In
Germany
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