The following will allow you to operate the CL9 Compressor/Limiter to its full potential:1. Connect your guitar to the input jack of the CL9 using a 1/4" instrument cable.2. Connect your amp to the output jack of the CL9 using a 1/4" instrument cable.3. Use the ATTACK TIME control to adjust how quickly the compressor responds to input signal peaks.4. Use the LEVEL control to adjust the output volume.5. Use the SUSTAIN control to determine the amount of compression.As always, experiment with the controls until the desired effect is achieved.