Check the listing for details. Mojo Hand FX Clarity Transparent Compressor Electric Guitar Effect Pedal. Condition: New, Made in United States. Listed at 139.00 USD. This is the Mojo Hand FX Clarity Compressor Electric Guitar Effect Pedal. CONTROLS: Mix - Adjusts the blend of compressed signal added to dry signal. Fully left is 100% dry, right is 100% compressed. Comp - Adjusts the amount of compression desired. Level - Adjusts the output volume level. Slope/Envelope Button - Selects between two compressor types. -Slope: With the button in the Up position, the Clarity has a linear, traditional style of compression. The attack is fast, quickly grabbing signal peaks for a smooth response and feel. -Envelope: With the button in the Down position, the Clarity becomes dynamic and punchier.