USB-connected TRAKTOR AUDIO 6 Audio Interface - Model: TRAKTOR AUDIO 6 - Connections: IN/OUT RCA terminals - Volume Adjustment: Main volume adjustment knob - USB Connection: USB power supply - Output Terminals: 2 main output systems - Headphone Jack: Headphone output terminal This listing includes only the main unit and the USB cable. I connected it to a PC and performed a simple operational check using the headphone output, but please understand that this is a layman's assessment. Thank you for viewing.