Compare DALI IO-6 vs Sennheiser HD 450BT vs Sennheiser HD 820
Variants
HD 820
HDV 820
Connectivity
Ports
3.5mm + USB-C
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
Construction
Battery | Capacity
600 mAh
Cable
3 m
Carrying Case
Travel case
Colors
Army Green, Chalk White, Iron Black, Caramel White
Black, White
Drivers
50 mm free edge paper fibre cone
Form Factor
Over-ear headphones, wireless headphones
Wireless headphones, over-ear headphones
Headphone Type
Closed headphones, Dynamic headphones
Dynamic headphones, Closed headphones
Material
Closed back circumaural (over ear)
Microphone
MEMS
Speakers
Dynamic, closed
Dimensions
Weight
325 g
238 g
Function
Bluetooth Codecs
AAC, aptX, aptX HD
SBC, AAC, AptX, AptX Low Latency
Microphone Pickup Pattern
Dual Beamforming
Noise Cancellation
Yes
Yes
Weather Resistance
IP53
Performance
Battery Life
60 h
30 hours music playback via Bluetooth with ANC activated
Charging Time
2.5 h
2 h
Frequency Response
10Hz - 20kHz
18Hz to 22kHz (-10 dB)
103 dB at 1 kHz, 1V
Impedance
25 ohms Via 3.5mm
300 ohms
Max Sound Level
100 dB
108 dB (1 kHz/0 dBFS)
103 dB at 1 kHz, 1V SPL
Microphone Frequency Response
80 Hz to 6000 Hz (-3 dB)
Sensitivity
200 mV rms / 175 mV rms
Production
Accessory
Flight adapter included
Debut
2019-10
2020 CES
Made In
Germany
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