The box AK 10 User Manual page 22

Connections and controls
12 [LINE OUT]
Line output (1/4" phone socket, unbalanced) to connect an amplifier or PA.
13 [CH2]
Channel 2 with separate volume control, AUX input (3.5 mm socket) and RCA input sockets for connecting an
external audio device.
14 [CH1]
Channel 1 with separate volume control, XLR / 1/4" combo socket for connecting a microphone or an external audio
source and toggle switch for LINE or MIC input signal level.
22
active speaker