The Stethophon® 04 amplifies structure-borne noise. With this instrument, you get undistorted sound reproduction even with very low noise levels.


  • Optional Sewerin Digital Radio (SDR) system for wireless headphone monitoring.
  • Optional external ground microphone connection.
  • 8 filter options.
  • Hearing protection.
  • Numeric display of minimal noise level (NML) (0–1 000)
  • Long battery life.
  • Lightweight – less than 300g.