thomann Hitman HD-7 Sonic User Manual page 19

Rear of the drum module
23 [POWER ON/OFF]
Main switch. Turns the device on and off.
24 Connection socket for the 9 V power supply unit
25 [USB TO HOST]
USB port for connecting a computer with USB-MIDI interface.
26 Serial interface for connecting the pads and cymbals
27 [PHONES]
Headphones (3.5-mm stereo mini jack)
28, 29 [LINE OUT L/R]
Connecting option for powered speakers or amplifiers.
30 [AUX IN]
Input jack (3.5-mm stereo mini jack) for connecting audio devices, such as CD, MP3 players, etc.
HD-7 Sonic
Connections and controls
19