Overdrive effector JACKAL, with 5 control knobs. - Model Name: JACKAL - Controls: level, treble, middle, bass, gain - LED Indicator: Red - Connectors: Input, Output - Effect Type: Overdrive Thank you for viewing. I have confirmed that the lamp lights up and sound is produced when the power is turned on. I will consider a price reduction if desired. If you would like to check the condition of the product, please comment and I will add photos. Returns are not accepted.