Boss Metal Core ML-2 Owner's Manual page 10

Operating the Unit
fig.ML-2-operation4.eps
5. Adjust the amount of
low-frequency sound
with the LOW knob.
10
fig.ML-2-operation5.eps
6. Adjust the output volume
with the LEVEL knob.
Normally, you should ad-
just the LEVEL knob so
there's no difference in
the volume when switch-
ing the effect on and off.