thomann Millenium MPS-450 User Manual page 12

Connections and controls
Rear panel
17 [9 V]
Connection socket for the power adapter
18 [PHONES]
Connection socket for headphones
19 [AUX IN]
Input for external audio devices like MP3 or CD players
20 [USB MIDI]
Connection socket for an external MIDI device with USB port
21 [MIDI OUT]
Connection socket for an external MIDI device
22 [OUTPUT R | L / MONO]
Output for external audio devices
23 [TRIGGER IN – CRASH2]
Connection socket for Crash 2
24 [TRIGGER IN – TOM 4]
Connection socket for Tom 4
12
e-drum module