Compare Bowers & Wilkins PX7 vs Sony WH-1000XM4 vs Sennheiser HD 820
Variants
HD 820
HDV 820
Connectivity
Ports
3.5mm stereo jack + USB-C
Gold-plated L-shaped stereo mini plug
[Input] 6.35 mm + 4.4 mm + XLR-4 | [Output] XLR, RCA, Coax, Optical, USB-B
Wireless Connectivity
Bluetooth
Bluetooth 5.0, NFC
Construction
Cable
1.2m stereo audio cable + 1.2m USB-A to USB-C cable
Single-sided (detachable)
3 m
Carrying Case
Yes
Colors
Space Grey, Silver, Carbon
Drivers
43.6mm full range
1.57 ", dome type (CCAW Voice coil), Aluminum coated LCP
Form Factor
Wireless Headphones, Over-Ear
Headphone Type
Dynamic headphones
Magnet
Neodymium
Microphone
4x mics for ANC + 2x mics for telephony
Speakers
Dynamic, closed
Dimensions
Weight
310 g
Function
Bluetooth Codecs
AptX Adaptive, aptX HD, aptX Classic, AAC, SBC
SBC, AAC, LDAC
Bluetooth Profiles
A2DP v1.3.1, AVRCP v1.6.1, HFP v1.7.1, HSP v1.2, BLE GATT
A2DP, AVRCP, HFP, HSP
Fast Charging
5hrs with 15min charge
Noise Cancellation
Yes
Performance
Battery Life
30 hrs Bluetooth with ANC
30 h (NC on) / 38 h (NC off)
Frequency Response
10Hz ~ 30kHz
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)
103 dB at 1 kHz, 1V
Impedance
20k Ohms
300 ohms
Max Sound Level
103 dB at 1 kHz, 1V SPL
Sensitivity
105 dB / mW (1 kHz)
Total Harmonic Distortion
0.3% (1kHz/10mW)
Production
Availability
2020 Summer
Debut
2019-10
2020-08-06
Made In
Germany
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