CS-1

The first BOSS compressor pedal has a distinctly different circuit than the later CS-2 and CS-3 models. It features an optical design with a photocoupler, which offers a slower attack with a unique character.

Page	Parameter	Value	Explanation
1	LEVEL	0–100	Adjusts the volume of the effect sound.
	MODE	NORMAL, TREBLE	Switches the sustain mode. The NORMAL setting produces a long sustain with low noise. This is the usual setting. The TREBLE setting emphasizes the high-end sustain.
	SUSTAIN	0–100	Adjusts the sustain time (how long the sound rings out). Turn the knob clockwise for a longer sustain time. Turn the knob counterclockwise for a limiter effect, which keeps loud input signals down.
2	CTL1 TARGET	OFF, LEVEL, (MODE), SUSTAIN	Selects the parameter to control from a footswitch connected to CTL1.
	CTL1 MODE	MOMENT, TOGGLE	Selects the operation mode for the footswitch that’s connected to CTL1.
	CTL1 VALUE	0–100, (NORMAL, TREBLE)	Sets the value for the parameter that’s controlled from a footswitch connected to CTL1. The setting range is NORMAL, TREBLE only when you select “MODE” for CTL1 TARGET.
3	CTL2 TARGET	OFF, LEVEL, (MODE), SUSTAIN	Selects the parameter to control from a footswitch connected to CTL2.
	CTL2 MODE	MOMENT, TOGGLE	Selects the operation mode for the footswitch connected to CTL2.
	CTL2 VALUE	0–100, (NORMAL, TREBLE)	Selects the value for the parameter that’s controlled from a footswitch connected to CTL2. The setting range is NORMAL, TREBLE only when you select “MODE” for CTL2 TARGET.
4	EXP TARGET	OFF, LEVEL, SUSTAIN	Selects the parameter controlled by an external expression pedal connected to the EXP jack.
	EXP MIN	0–100	Sets the minimum value for the parameter controlled by an expression pedal connected to the EXP jack.
	EXP MAX	0–100	Sets the maximum value for the parameter controlled by an expression pedal connected to the EXP jack.
5	PEDAL MODE	MOMENT, TOGGLE	Selects the operation mode for the pedal switch on the PX-1.
	ACTION	OFF Ó ON, ON Ó OFF	Sets how the pedal switch on this unit operates when PEDAL MODE is set to “MOMENT”.
	–	–