Compare DALI IO-4 vs Sony WH-1000XM4 vs Bowers & Wilkins PX7
Connectivity
Ports
3.5mm + USB-C
Gold-plated L-shaped stereo mini plug
3.5mm stereo jack + USB-C
Wireless Connectivity
Bluetooth 5.0
Bluetooth 5.0, NFC
Bluetooth
Construction
Cable
Single-sided (detachable)
1.2m stereo audio cable + 1.2m USB-A to USB-C cable
Carrying Case
Yes
Colors
Army Green, Chalk White, Iron Black, Caramel White
Space Grey, Silver, Carbon
Drivers
50 mm free edge paper fibre cone
1.57 ", dome type (CCAW Voice coil), Aluminum coated LCP
43.6mm full range
Form Factor
Over-ear headphones, wireless headphones
Wireless Headphones, Over-Ear
Headphone Type
Closed headphones, Dynamic headphones
Dynamic headphones
Magnet
Neodymium
Material
Closed back circumaural (over ear)
Microphone
4x mics for ANC + 2x mics for telephony
Dimensions
Weight
320 g
310 g
Function
Bluetooth Codecs
AAC, aptX, aptX HD
SBC, AAC, LDAC
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
5hrs with 15min charge
Noise Cancellation
No
Yes
Weather Resistance
IP53
Performance
Battery Life
60 h
30 h (NC on) / 38 h (NC off)
30 hrs Bluetooth with ANC
Charging Time
2.5 h
Frequency Response
10Hz - 20kHz
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 ~ 30kHz
Impedance
25 ohms (Via 3.5mm)
20k Ohms
Max Sound Level
100 dB
Sensitivity
200 mV rms / 175 mV rms
105 dB / mW (1 kHz)
Total Harmonic Distortion
0.3% (1kHz/10mW)
Production
Availability
2020 Summer
Debut
2019-10
2020-08-06
2019-10
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