Compare Sennheiser HD 350BT vs DALI IO-6 vs Microsoft Surface Headphones 2+
Connectivity
Ports
USB-C
3.5mm + USB-C
USB-C, 3.5mm
Wireless Connectivity
Bluetooth 5.0
Bluetooth 5.0
Bluetooth 5.0
Construction
Battery | Capacity
320 mAh
Cable
1.2 m Audio, 1.5 m USB
Carrying Case
Travel case
Colors
Black, White
Army Green, Chalk White, Iron Black, Caramel White
Matte Black
Drivers
50 mm free edge paper fibre cone
40 mm Free Edge driver
Form Factor
Wireless headphones, over-ear headphones
Over-ear headphones, wireless headphones
Over-ear, wireless headphones
Headphone Type
Dynamic headphones, Closed headphones
Closed headphones, Dynamic headphones
Material
Closed back circumaural (over ear)
Microphone
MEMS
Dimensions
Size | Depth
1.89" / 48 mm
Size | Length
8.03" / 204 mm
Size | Width
7.68" / 195 mm
Weight
238 g
325 g
0.64 lbs / 290 g
Function
Bluetooth Codecs
SBC, AAC, AptX, AptX Low Latency
AAC, aptX, aptX HD
SBC, aptX
Bluetooth Profiles
HSP, HFP, AVRCP, A2DP
Compatibility
Up to 2 simultaneous connections
Microphone Pickup Pattern
Dual Beamforming
Noise Cancellation
No
Yes
Up to 30 dB for active noise cancellation, Up to 40 dB for passive noise cancellation
Sensor
Wear detection sensors on earcups, Touch sensors on earcups
Weather Resistance
IP53
Performance
Battery Life
30 hours music playback via Bluetooth
60 h
Up to 18.5 hours of music listening time or up to 15 hours of voice calling
Charging Time
2 h
2.5 h
Full charge in less than 2 hours
Frequency Response
18Hz to 22kHz (-10 dB)
10Hz - 20kHz
20Hz-20KHz
Impedance
25 ohms Via 3.5mm
Max Sound Level
108 dB (1 kHz/0 dBFS)
100 dB
Up to 115 dB
Microphone Frequency Response
80 Hz to 6000 Hz (-3 dB)
Sensitivity
200 mV rms / 175 mV rms
Production
Accessory
Flight adapter included
Debut
2020 CES
2019-10
2021-04
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