english
A 20 – Operation
9
Looped-through input (hard-wired), RCA phono sockets for signal sources with high levels.
Input sockets = for the connection of audio sources (CD player, DVD player etc.)
Output sockets = for the connection of devices with high level input (stereo amplifiers, active loudspeakers etc.)
At the output sockets you can pick up the audio signal from the input sockets and route it to your stereo
amplifier, active loudspeakers or other devices with standard inputs for high levels. As the signal of the input
sockets is permanently available at the output sockets, you can listen to the looped-through audio signal via your
hi-fi system, even when the A 20 is turned off.
Mains connection with integrated wide-range switching power supply for 100 - 240 V AC.
Due to the integrated wide-range switching power supply, the A 20 can be operated with 110 V/60 Hz or
240 V/50 Hz.
Rear View
5. Technical Specifications
Input impedance. . . . . . . . . . . . . . . . . . . . . 25 k
Maximum amplification . . . . . . . . . . . . . . . . 18 dB
Frequency response. . . . . . . . . . . . . . . . . . . 10 Hz - 100 kHz (-1 dB)
T.H.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01% at 170 mW / 250
Channel separation . . . . . . . . . . . . . . . . . . > 80 dB at 1 kHz / 250
Output power . . . . . . . . . . . . . . . . . . . . . . . 100 mW / 600
170 mW / 250
150 mW / 30
Signal-to-noise ratio . . . . . . . . . . . . . . . . . . > 100 dB (unweighted)
Output impedance . . . . . . . . . . . . . . . . . . . Headphone output 100
Input voltage . . . . . . . . . . . . . . . . . . . . . . . 100 - 240 V AC / 50/60 Hz
Power consumption. . . . . . . . . . . . . . . . . . . < 10 W via integrated switching power supply
Ambient temperature. . . . . . . . . . . . . . . . . . +10 °C to +40 °C
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . < 90%
Height above sea level. . . . . . . . . . . . . . . . . < 2000 m
Audio connections. . . . . . . . . . . . . . . . . . . . 2 headphone sockets, 1/4" stereo jack (6.35 mm)
1 line output
1 audio input via RCA phono sockets
Dimensions
Housing only . . . . . . . . . . . . . . . . . . . . . . . . 164 x 194 x 48 mm
Housing incl. button, rubber feet, RCA
phono sockets . . . . . . . . . . . . . . . . . . . . . . . 164 x 212 x 55 mm
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1640 g
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