The Signal Pad from Electro-Harmonix is a passive attenuator pedal that allows you to reduce the signal level of your instrument with a single control knob. The unit allows you to set up an alternate volume for controlling your amplifier. If your amplifier is set for a high gain distortion, you can run it through the Signal Pad to lower your signal level. As you step on the footswitch, your amplifier will back down and give you a cleaner tone with the same clarity and characteristics. You can also use the Signal Pad to set up alternate volumes to drive other pedals and pedal boards. In front of an envelope follower pedal, such as the Q-Tron, the Signal Pad will allow you to change the QTron's sensitivity.
The signal path through the Signal Pad is completely passive; the unit does not require power to work. The Signal Pad's power connection is only for lighting the LED. It requires a 9V battery or an external US96DC-200BI power supply (sold separately).