Pioneer DDJ-S1, a 2-channel USB DJ controller, black. Fully functional. Used until recently. The right vertical fader has been replaced with a new one. AC adapter included. The EQ knob for the microphone in the upper right is broken. It can be operated if replaced, but there is no problem for DJ play even without it. You can use Serato DJ Pro even without purchasing a license. - Brand: Pioneer - Model: DDJ-S1 - Color: Black - Features: 2-channel controller - Connection Type: USB connection - Included Items: Compatible with DJ software Thank you for viewing.