Outputs 2 and 1: These are the main outputs for the dual Audio Buddy preamps. They provide unbalanced outputs if a tip-sleeve 1/4" plug is used. Or, they provide balanced outputs if a tip-ring-sleeve (stereo) 1/4" plug is used. The leve of these outputs are independently controlled by the front panel gain controls. Remember, Preamp 1 and Preamp 2 are completely independent.