Compare DALI IO-6 vs Sennheiser HD 450BT vs Bowers & Wilkins PI4
Connectivity
Ports
3.5mm + USB-C
USB-C
USB-C
Wireless Connectivity
Bluetooth 5.0
Bluetooth 5.0
Bluetooth, USB-C
Construction
Battery | Capacity
600 mAh
Cable
20cm USB-A to USB-C cable
Carrying Case
Travel case
Colors
Army Green, Chalk White, Iron Black, Caramel White
Black, White
Black, Gold, Silver
Drivers
50 mm free edge paper fibre cone
14.2mm full range
Form Factor
Over-ear headphones, wireless headphones
Wireless headphones, over-ear headphones
In-Ear, Neckband Wireless Headphones, Earbuds
Headphone Type
Closed headphones, Dynamic headphones
Dynamic headphones, Closed headphones
Dynamic headphones
Material
Closed back circumaural (over ear)
Microphone
MEMS
2x mics for ANC + 2x mics for telephony
Dimensions
Weight
325 g
238 g
40 g
Function
Bluetooth Codecs
AAC, aptX, aptX HD
SBC, AAC, AptX, AptX Low Latency
AptX-Adaptive, aptX-HD, aptX-Classic, AAC, SBC
Bluetooth Profiles
A2DP v1.3.1, AVRCP v1.6.1, HFP v1.7.1, HSP v1.2, BLE GATT
Fast Charging
3hrs with 15min charge
Microphone Pickup Pattern
Dual Beamforming
Noise Cancellation
Yes
Yes
Yes
Weather Resistance
IP53
Performance
Battery Life
60 h
30 hours music playback via Bluetooth with ANC activated
10hrs Bluetooth with ANC (12hrs w/o)
Charging Time
2.5 h
2 h
Frequency Response
10Hz - 20kHz
18Hz to 22kHz (-10 dB)
10Hz ~ 30kHz
Impedance
25 ohms Via 3.5mm
Max Sound Level
100 dB
108 dB (1 kHz/0 dBFS)
Microphone Frequency Response
80 Hz to 6000 Hz (-3 dB)
Sensitivity
200 mV rms / 175 mV rms
Total Harmonic Distortion
0.3% (1kHz/10mW)
Production
Accessory
Flight adapter included
Ear Tips: S / M / L
Debut
2019-10
2020 CES
2019-10
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