Lehmannaudio Black Cube Linear - 1 V; Voltage needed for 1 mW power

Lehmannaudio Manual Black Cube Linear - page 6 -
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Overview of power consumption of different headphones at
different signal levels:
level
(v
eff
)
Headphone impedances
32 Ohms 60 Ohms 120 Ohms 300 Ohms 600 Ohms
0,1V 0,31mW 0,16mW 0,08mW 0,033mW 0,016mV
0,5V 7,8mW 4,2mW 2,1mW 0,83mW 0,42mW
1V 31,3mW 16,7mW 8,3mW 3,3mW 1,7mW
2V 125mW 66,7mW 33,3mW 13,3mW 6,7mW
3V 281mW 150mW 75mW 30mW 15mW
4V 500mW 267mW 133mW 53mW 27mW
5V 781mW 420mW 210mW 83mW 42mW
6V 1,13W 600mW 300mW 120mW 60mW
7V 1,53W 817mW 408mW 163mW 82mW
8V 2W 1,06W 533mW 213mW 107mW
9V 2,53W 1,35W 680mW 270mW 135mW
Voltage needed for 1mW power
units Headphone impedances
32 Ohms 60 Ohms 120 Ohms 300 Ohms 600 Ohms
Volts 179mV 245mV 347mV 550mV 775mV
dBu
(0dB = 775mV)
-12,7 -10 -7 -3 0
dBV
(0dB = 1V)
-14,9 -12,2 -9,2 -5,2 -2,2