The Line 6 Variax Cabled Power Kit also functions as a direct box. Its supplied 15' Planet Waves 1/4" TRS cable powers your Variax and sends the guitar's signal to the XPS A/B box. The XPS sports a 1/4" and an XLR output. Send the 1/4" signal to your amp and the XLR to the main board. By hitting the A/B button you can switch where your signal is sent to. This is perfect for acoustic guitar models that will sound better running straight through the mixer as opposed to your guitar amp. This kit adds flexibility and unlimited power to any Variax. Never worry about battery life again with the Line 6 Variax Cabled Power Kit.