What is the deal with expression pedals??
An expression pedal is used to control some device that it hooks up to, for example a speed or depth function. A normal exp pedal will have a stereo plug on the end of it’s cord, as it needs to control a voltage coming from that device. You can’t normally use a mono cable with 2 contacts as it needs 3 contacts: ground, voltage, and controlled voltage. However you can use MOST volume pedals an an expression pedal. To do that, you need to use an INSERT CABLE. This is a Y cable with a stereo plug on one end which plugs into the device, and two mono plugs on the other side which plug into the input and output of the volume pedal. But the pots in volume pedals are high resistance (100K or more) so they don’t always work well, as EXP pedals are usually low resistance (10K or so).
