A Guitar effects pedal can be purchased at Musician's Friend for
$149.99. Amazon also has a ZOOM G1 Guitar Effects Pedal listed on
their website for $79.99.
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One can purchase a Zoom G2 1u multi effects guitar effects pedal
at ZZSounds and Ebay. Also the pedal can be purchased at Amazon and
Musicians Friend.
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The meaning of 'boss effects' is a brand of guitar pedal and the
effects that it provides. A guitar pedal may allow one to add
different sounds and effects to a song without having another
instrument.