After plugging in, do the following to set your primary gain and configure your Pro Tools hardware by watching its input indicators (meters). This sets the first stage of your gain structure for Eleven.To prepare your guitar and Pro Tools host-based hardware for input calibration:1 In Pro Tools, choose Setup > Playback Engine and set your Hardware Buffer to a low enough setting to reduce monitor latency.2 On your guitar, select the highest output pickup or position and set the volume and tone controls to 10 (maximum).3 Strum full chords (your loudest expected playing) while watching the Input indicators on your audio hardware.4 Adjust the Input Gain on your audio interface high enough to indicate a strong signal on the hardware Input LED (but not overloading the input).To prepare your guitar and Pro Tools|HD hardware for input calibration:1 On your guitar, select the highest output pickup or position and set all volume and tone controls to the maximum.2 Strum full chords (your loudest expected playing) while watching the Input indicators on your audio hardware.3 Adjust your pre-amp input gain until you see a strong signal on your audio interface Input meters (but not overloading the input).