Using The Boost Function - Zoom A3 Operation Manual

Using the Boost Function

You can increase the volume by up to 12 dB, allowing you to adjust the volume used
during solos or when switching from strumming to finger picking.
1
To turn the boost ON and OFF
.
OFF
NOTE
2
To adjust parameters
.
Boost :
Tone :
3
To complete the setting
or
ON
Turn .
Turn .
.
BOOST
15