The FREE THE TONE LB-2 is an expansion loop box developed to control various signal lines. The LB-2 can add loops to the ARC-3 or ARC-53M (two additional loops) or provide effect loops for an amplifier’s send/return. With two separate loops, it can be utilized in six ways, as an input selector, output selector, etc., depending on how it is connected. The FREE THE TONE LB-2 enables to make your sound system more flexible.