Needle Microphone with Amplifier

PKI 2470Print

Sometimes a room is only accessible via tiny holes or cracks, where only a needle microphone is small enough to be introduced and to capture conversations from inside the room. The signals are amplified by the integrated amplifier, so that direct listening via headphones is possible. The PKI 2470 is equipped with an input socket for our digital recorder PKI 1865. Sounds are electronically adjusted, which means that low sounds are more amplified than louder sounds, so that the volume is maintained at a constant level.



  • Highly sensitive electret microphone
  • Needle ø: 1.5 mm x 200 mm
  • Range: approx. 10m
  • Connection: 2.5 mm RCA
  • Power supply: supplied by amplifier


  • Dimensions: 34 x 20 x 114 mm
  • Power supply: 9 V battery
  • Operating time: approx. 60 hours
  • Accessory: head phones
  • We recommend combination with our recorder D 1300