Yamaha QY20 Owner's Manual - Page 23

2 Setting Up: Power & Connections 1 DC IN Jack This jack is only used when you are powering the QY20 from an optional AC adaptor instead of batteries. The DC output cable from an optional Yamaha PA-3, PA-4, or PA-40 AC Power Adaptor is plugged in here. The batteries are automatically disconnected when a plug is inserted into the DC IN jack. DETAIL 2 MIDI IN & OUT Connectors If you plan to use a MIDI keyboard or other instrument to play and program the QY20, it should be connected to QY20 MIDI IN connector (see "MIDI Connections," below). The MIDI OUT connector can be connected to an external tone generator if you want to drive external voices from the QY20 sequencer, or a MIDI data recorder such as the Yamaha MDF2 if you want to store your songs and patterns to floppy disk (➪ page 163). 3 LINE OUT Jack This miniature stereo phone plug delivers a line-level stereo output signal from the QY20 for connection to a stereo sound system (see "Audio Connections," below). The output level is adjusted via the VOLUME control on the right side panel. 4 PHONES Jack Any pair of stereo headphones with the miniature stereo phone plug can be plugged in here for convenient monitoring. The PHONES output level is adjusted via the VOLUME control on the right side panel. 20