Boss VE-20 is a guitar pedal designed to produce sound modulations by applying effects such as delay, reverb, vocal. To provide the musicians with an option to control the desired aspects of their instrument's tone, this model is equipped with the following controls: footswitch. The guitar effect pedal features 1/4 jack, xlr jack, 1/4 trs jack, 1/4" ts jack input, 1/4 jack, xlr jack, 1/4 phone jack, xlr mono jack output connectors and uses AC adapter/battery power supply.