MICM series of products are fixed-channel analog audio/video modulators available in the following models: MICM-45D: Is available in NTSC channels 2-79 and 95-99 (54-550 MHz). This 5th generation of the MICM series, equipped with the CALMTones feature, utilizes an Audio AGC (Automatic Gain Control) solution that eliminates variations in loudness level that may be present among various program sources. MICM-45DS: Is the same as MICM-45D but with stereo audio output.