Littmann Electronic Stethoscope

Ambient Noise Reduction (ANR)

New Littmann technology that helps you find clarity amid cacophony

Until now, the advantages of amplification in an electronic stethoscope have been negated by the sensitivity of electronic stethoscopes to distracting sounds from ambient room noise.

Examples of ambient noise include:

• Human voices and movement

• Medical equipment (respirators, heart/lung machines, heart monitors)

• Other environmental sounds

But thanks to a proprietary technology advancement known as Ambient Noise Reduction (ANR), Littmann Electronic Stethoscopes Model 4100WS and Model 3000 reduces distracting room noise by an average of 75% (-12dB) without eliminating critical body sounds.