From Manufacturer
The LN2MIC-TAS-GH1 2.5mm Line to Mic Cable, 35dB Attenuation for Tascam DR-100 with Monitoring from Sescom is an interface cable. It is used when integrating an audio recorder to capture audio for DSLR and video cameras in applications such as for weddings, sports events, video shoots and more. The DSLR cameras utilize an unbalanced stereo mic level audio input on a mini TRS 2.5mm jack. Professional pocket recorders deliver different line level audio signals.
The LN2MIC-TAS-GH1 cable features circuitry on both audio channels to match the sweet spot level of your camera's mic input. This cable avoids clunky XLR type attenuators that can produce heavy strain on the cameras mic input connector. This cable also features an output connection for monitoring of the audio signal.