The Effects Loop Snd/Rtn jack allows for virtually noise free connection of external effects. You will need a stereo-to-dual-mono 1/4� adapter as described in the illustrations below. This T/R/S jack is wired as follows: tip = return, ring = send, sleeve = ground.
Stereo-to-mono Y-cord:
to Insert jack TIP RING SLEEVE
Y-adapter and 2 cables:
RETURN SEND GROUND TIP RING SLEEVE to Insert jack
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