AX-704 (Last Time Buy) 11/2/2017 Category: Products, Clear-Com Encore Analog Partyline Systems, IFB and Commentator, IFB Solutions Expands MA-704 station by four Talent channels Connect multiple expansion panels for up to 96 Talent channels All IFB button simultaneously access all Talent channels Tally lights indicate IFB channels in use Optional rack mount kit for up to 12 talent access buttons in a 1RU Powered by the intercom line