The TLM 170 is a multi polar pattern condenser microphone with transformerless circuit topology. The microphone features exceptionally clean sound transmission, free of colouration, whilst offering extremely low self noise.

Five directional characteristics are selectable by means of a rotary switch. In the sixth position, marked "R", the directional patterns can be controlled remotely with the N 248 power supply. There is no special cable necessary for this purpose. 

The TLM 170 also features a 10 dB attenuation switch for extremely high sound pressure levels, and a high-pass filter to suppress structure born noise.