Selection Guide

Which stethoscope is for you?

At the bottom of this page you find a comparative chart of all our stethoscopes, their applications, fields of professional use and acoustic performances (on a scale of 1 - 10)

Features

When purchasing a stethoscope, it is important to know how properly work work with the device. The main features are:

Single-tube or double-tube

The difference between a single-tube and a double-tube stethoscope is the capacity of the tube to displace air. Double-tube stethoscopes have a double internal lumen and can displace more pressure. In older models (for example, the Rappaport stethoscope), two separate tubes were often used. Nowadays everything can be neatly accommodated in one tube. The following stethoscopes have this type of double internal lumen:

Schweitzer Cardio III

Littmann Cardiology III

Littmann Cardiology IV

Littmann Master Cardiology


Adjustable diaphragm

An adjustable diaphragm actually means that a clock is unnecessary. The traditional clock in a stethoscope is intended to enable low frequencies to be heard. In a stethoscope with an adjustable diaphragm, low frequencies are made audible by exerting slight pressure on the chest-piece (and the skin), while high frequencies are made audible when more pressure is exerted.

Clock mode (low frequencies) Slight pressure on the chest-piece makes low frequency sounds audible.

Diaphragm mode (high frequencies) By exerting more pressure, the high-frequency sounds are audible.

Survey of applications, performances and users of stethoscopes

Littmann® Schweitzer™ Application Primary Users Details Performance Scale (1-10)

Classic II Infant

Classic II Infant
Infant Physical Diagnosis and Assessment Child Specialists Small 1.9cm bell for infant use. High acoustic sensitivity. 7

Classic II Pediatric

Classic II Pediatric
Pediatric Physical Diagnosis and Assessment Child Specialists Reduced size 2.5cm bell for pediatric use. High acoustic sensitivity. 7

Classic II S.E.

Classic 
Physical Diagnosis and Assessment Medical Students, Nurses, General Practitioners The industry standard. Allows low and high frequency sounds to be heard with either side of the chestpiece. High acoustic sensitivity. 7

Master Classic II
  Physical Assessment and Diagnosis General Practitioners, Physiotherapists Excellent acoustics / portable. Monitor both high and low frequencies without turning the chestpiece over. 8

Cardiology III

Cardio III
Adult Cardiology/High Performance Pediatric Cardiologists, Child Specialists, General Practitioners, Respiratory Specialists Outstanding acoustics / versatile Pediatric and adult chestpiece. Large side of chestpiece for adult/large hearts, small side for Pediatric or thin patients. 9

Cardiology S.T.C.
  Adult Cardiology/High Performance Cardiologists, General Practitioners, Respiratory Specialists Outstanding acoustics. Soft Touch Chestpiece excels in situations where there is a change from low frequency to high frequency response. 9

Master Cardiology
  Adult Cardiology/High Performance Pediatric Cardiologists, General Practitioners, Respiratory Specialists Superior acoustics. Best quality non-electronic stethoscope. 10

Electronic Model 3100
  Adult Cardiology/High Performance Infant, Pediatric Cardiologists, General Practitioners, Respiratory Specialists Superior amplified acoustics with ambient noise reduction. 10+

Electronic Model 3200
  Adult Cardiology and High Performance Infant, Pediatric Cardiologists, General Practitioners, Respiratory Specialists Superior amplified acoustics with recording (storage and playback), bluetooth transfer of recording, phonocardiogram visual display software. 10+

Electronic stethoscopes

For some time, more electronic stethoscopes have been appearing on the market in addition to the traditional acoustic stethoscopes. The advantage of these stethoscopes is that the signal can be amplified as much as 24 times. Ambient sounds can be filtered away using modern technologies such as Ambient Noise Reduction (ANR). In addition, fricative sounds generated during auscultation can also be filtered away with the newer models. 3M Littmann calls this technology Frictional Noise Reduction (FNR).

 

Littmann produces following stethoscopes

  • Littmann 3200 (amplification up to 24x, ANR+, FNR+, bluetooth+)

In the Littmann 3200, Bluetooth® can be used to configure a connection with a PC or laptop.