"The JK Audio RemoteMix 2 is a two-channel field mixer / headphone amplifier built for the remote broadcast environment. More than just a field mixer, RemoteMix 2 provides a communications interface for remote broadcast, IFB or a backup audio path. The integrated headphone amplifier provides sidetone to monitor all inputs plus an external feed. RemoteMix 2 features a phone line hybrid with keypad along with a wired notebook/cell phone headset interface. All sections are designed to work together, saving setup time and wiring in the field. Using TV, RemoteMix 2 Combines a small front-end mixer with two powerful 1/4"" headphone outputs. Send and receive interview audio while pulling IFB off the phone line, cell phone or notebook. Using Radio, RemoteMix 2 is perfect for live remotes. Use it as a front-end mixer for your POTS, ISDN, IP or smart phone codec. Use it as a phone line hybrid, calling in to your studio talk show hybrid.|LED VU Meter|Phone line hybrid with DTMF keypad|Wired phone headset interface (2.5 and 3.5 mm interfaces)|HD Voice Compatible|Dual 9 volt batteries|100-240 VAC External AC Supply"