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KEF LS50 vs. Sony SA-Z9R + 3
Active
No
Yes
Yes
Yes
No
Frequency range (max)
45000 Hz
47000 Hz
30000 Hz
Frequency range (min)
47 Hz
40 Hz
64 Hz
Impedance
8 Ω
4 - 6 Ω
Power (peak/max)
100 W
125 W
Power (RMS)
100 W
100 W
50 W
Sensitivity
85 dB
90 dB
88 dB
Wireless connection
None
Bluetooth
Bluetooth
Bluetooth
None
Streaming standards
AirPlay, Spotify Connect, Tidal, AirPlay 2
Other connectors
Type of connection
Single-wire
Bi-wire
Single-wire
Available colours
Black, White, Silver, Grey, Blue, Red, Wenge
Black, Wenge
Black, White, Wenge
Black, White, Grey, Red
Black, White, Grey, Wenge, Walnut
Dimensions (WxHxD)
Depth
278 mm
100 mm
83.8 mm
282 mm
Height
302 mm
155 mm
93.9 mm
278 mm
Width
200 mm
81.2 mm
170 mm
Product weight
7.2 kg
1 kg
0.54 kg
20.1 kg
5.5 kg
Midrange driver
No
No
Signal separation
2-way
2-way
Tweeter drivers, size
1 inches
1 inches
0.9 inches
Tweeter drivers, type
Aluminum-dome
Type of box body
Bass reflex
Bass reflex
Woofer driver, size
5.23 inches
5 inches
Woofer drivers, quantity
1 ​
1 ​