Compare Sony WH-1000XM4 vs DALI IO-6 vs Bowers & Wilkins PI4
Connectivity
Ports
Gold-plated L-shaped stereo mini plug
3.5mm + USB-C
USB-C
Wireless Connectivity
Bluetooth 5.0, NFC
Bluetooth 5.0
Bluetooth, USB-C
Construction
Cable
Single-sided (detachable)
20cm USB-A to USB-C cable
Carrying Case
Travel case
Colors
Army Green, Chalk White, Iron Black, Caramel White
Black, Gold, Silver
Drivers
1.57 ", dome type (CCAW Voice coil), Aluminum coated LCP
50 mm free edge paper fibre cone
14.2mm full range
Form Factor
Over-ear headphones, wireless headphones
In-Ear, Neckband Wireless Headphones, Earbuds
Headphone Type
Closed headphones, Dynamic headphones
Dynamic headphones
Magnet
Neodymium
Material
Closed back circumaural (over ear)
Microphone
2x mics for ANC + 2x mics for telephony
Dimensions
Weight
325 g
40 g
Function
Bluetooth Codecs
SBC, AAC, LDAC
AAC, aptX, aptX HD
AptX-Adaptive, aptX-HD, aptX-Classic, AAC, SBC
Bluetooth Profiles
A2DP, AVRCP, HFP, HSP
A2DP v1.3.1, AVRCP v1.6.1, HFP v1.7.1, HSP v1.2, BLE GATT
Fast Charging
3hrs with 15min charge
Noise Cancellation
Yes
Yes
Weather Resistance
IP53
Performance
Battery Life
30 h (NC on) / 38 h (NC off)
60 h
10hrs Bluetooth with ANC (12hrs w/o)
Charging Time
2.5 h
Frequency Response
Wired: 4 Hz-40,000 Hz | Bluetooth: 20 Hz–20,000 Hz (44.1 kHz Sampling)/20 Hz–40,000 Hz (LDAC 96 kHz Sampling, 990 kbps)
10Hz - 20kHz
10Hz ~ 30kHz
Impedance
25 ohms Via 3.5mm
Max Sound Level
100 dB
Sensitivity
105 dB / mW (1 kHz)
200 mV rms / 175 mV rms
Total Harmonic Distortion
0.3% (1kHz/10mW)
Production
Accessory
Flight adapter included
Ear Tips: S / M / L
Availability
2020 Summer
Debut
2020-08-06
2019-10
2019-10
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