When we buy new device such as Boss Audio Systems OC-20G we often through away most of the documentation but the warranty.
Very often issues with Boss Audio Systems OC-20G begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Musical Instrument Boss Audio Systems OC-20G is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Musical Instrument on our side using links below.