Boss JamStation JS-5 Owner's Manual page 31

Playing Along with a Song on Guitar
Let's try connecting an electric guitar to the JS-5 and play along with a song
on the guitar.
fig.QS02-20
1,4 2,3
1
Turn [REC LEVEL] counterclockwise all the way.
fig.QS02-21
2
Connect the electric guitar to the REC INPUT jack.
Let's Try Playing Some Sounds
5
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