The SI 1015 wideband modulator uses the new extremely reliable carrier frequencies 2.3 and 2.8MHz and can be operated in single-channel, two-channel and stereo modes. The modulator is fitted with two balanced XLR-3 audio inputs and IR monitoring diodes. It can be used with SZI 1015 and SZI 1029 radiators, the signals for the radiators are available at two RF sockets or alternatively, at a barrier strip.