With its ergonomic design, state-of-the-art
amplification and ambient noise reduction technology, the 3000 Series is a powerful, effective tool for health care professionals. Since its
introduction in November of 2005, 3M has received numerous compliments on its newest electronic stethoscope. To further build credibility in
the performance of the Model 3000, we have collected some testimonials and pasted them below.
I am a nurse in a busy cardiovascular Intensive Care Unit, where the buzzing
and humming of many machines often presents a challenge when I am trying to hear lung, heart and belly sounds. A friend of mine recommended
the Littmann Model 3000 to me, and after trying it for just a few days I was immediately hooked. This stethoscope has many beneficial
components that make auscultation easier, and help me to focus and do my job more efficiently and precisely. The Model 3000's ability to
block out ambient noise is invaluable to me, and I also appreciate the convenient size and light weight of the device. I feel very grateful
to have found this stethoscope.
- Robin Hare, RN, Cardiovascular ICU of Banner Good Samaritan Hospital, Phoenix, Arizona
As an anesthesiologist, I use my stethoscope dozens of times a day. I started using the Littmann Model
3000 six months ago. It wasn't until I began the two week free trial of this scope that I became aware of the limitations of my previous
scope. The Model 3000 is ideal for an anesthesiologist because the operating room and preoperative areas, the two places where I most
frequently use my scope, are noisy environments. For example, there is constant conversation between surgeons, nurses and anesthesiologists.
In addition, surgical equipment and anesthesia monitors make loud buzzing and beeping sounds. Sometimes music is even being played. Because
of this background noise, the ambient noise reduction feature of the Model 3000 is very beneficial. This scope definitely helps me pick up
subtle, critical changes in breath sounds, as well as murmurs and signs of congestive heart failure.
- Deniz A. Perese, M.D. Minneapolis, MN
I am a pediatric nurse practitioner and work in a school-based setting that is often extremely noisy.
Part of my job includes conducting sports physicals for student athletes, and because I am not working in an optimal clinical setting it's
challenging to hear well enough to accurately diagnose all issues. I was thrilled when several weeks ago my husband bought me the Littmann
Model 3000 Series for my upcoming birthday, but little did I know how necessary this scope would be on the actual day of my birthday. On that
day, I was called to aid in a potential respiratory emergency of a 350-pound student athlete. Using the ambient noise reduction and
adjustable volume settings of my Model 3000, I was quickly able to determine that the student was fully inflating his lungs, which I would
never have known by using my old stethoscope. I instantly knew that I did not need to perform CPR and that he was simply having a panic
attack. After the incident I called my husband right away to thank him for giving me this invaluable birthday gift.
- Sharron Close, CPNP, NYU Bellevue Hospital, Department of Pediatrics
I agreed to do a study with the 3M Littmann Electronic Stethoscope Model 3000, comparing it to my
current, cardiology-type stethoscope. The Littmann Model 3000 won hands down. I have patients on ventilators in the ICU and alarms going off
all the time on a variety of equipment. With the Littmann Model 3000, I am able to listen to the patient and make assessment with confidence,
even while nurses and doctors are talking around me and alarms are sounding.
- Tammy Bramblett CRT, Respiratory Therapist in MedSurg, ICU, and Emergency Department, Georgia
Electronic stethoscopes have improved dramatically in the past few years. I have been using a
stethoscope for over 30 years and I was not always able to hear all heart sounds clearly. About two years ago I heard about the Littmann
Model 3000 after attending a human cardiology conference, and what a difference it's made in my practice! With the Ambient Noise Reduction
(ANR) technology of the Model 3000, there is now a marked reduction in unwanted ambient noise that is extremely helpful when I listen for
abnormal heart sounds. This new technology applies quite well to veterinary medicine as the amplification of sounds is very useful for the
different species and breeds, and switching between bell and diaphragm is also very easy to do. I recommend that any practicing veterinarian
try the Model 3000, I know they'll be as happy with it as I am."
- Larry P. Tilley, DVM, DACVIM (Internal Medicine) Co-author of Rapid Interpretation of Heart Sounds, Murmurs, Arrhythmias, and Lung Sounds: A Guide to Cardiac
Auscultation in Dogs and Cat. CD-ROM and Manual. Elsevier. Philadelphia, 2006
I have evaluated the 3M Littmann Model 3000 Stethoscope for the past few months, and have found it to be
superior to other stethoscopes I have used in the past. The sound amplification allows me to hear the very faint wheezes and crackles that I
could not hear with a conventional stethoscope. It is also easier to hear the faint systolic and diastolic blood pressure sounds during a
- Ronald Cooper, BS, RRT, CPFT, Respiratory Therapist in ICU, Emergency, Outpatient, Labor and Delivery Mother Baby and PFTs
The Model 3000 beats other stethoscopes I've used hands down; its acoustics,
ergonomics and versatility are superb. As a paramedic and nursing student working in harsh, noisy environments – ambulances and hospitals –
I need a rugged stethoscope that filters out as much noise as possible while being versatile enough to fit many situations and sizes of
people. Working in these settings, I need any edge I can get, and the Model 3000 clearly gives me an edge. Just the other day, I had a
patient's family member in the hospital room talking as I was listening to the patient's lungs, and I couldn't even hear the family member.
By blocking out this distracting noise, the Model 3000 allowed me to fully concentrate on the patient's sounds I needed to hear – that was a
first for me! Additionally, I've used the 3000 to treat patients ranging from neonates to adults, and have experienced the same great
quality no matter which type of patient I've treated. I would recommend the 3000 to any of my colleagues. My Littmann 3000 will be a long
- Sean Hall, nursing student/EMT, Maine
As a hearing-impaired pediatrician whose hearing loss is in the range where children speak, I had long
been searching for a stethoscope to meet my needs. Enter the Littmann Model 3000! This stethoscope makes hearing children's cardiac and
respiratory sounds much easier for me due to its excellent amplification and ambient noise reduction technology. In my busy pediatric
practice there are often little children running around causing excessive background noise that can hinder my ability to hear well, but this
stethoscope really eliminates that noise and makes my job a whole lot easier. The Model 3000 is also extremely comfortable, fitting perfectly
in my ear with a hearing aid in place. My pediatric patients especially love the "no-chill factor" of this stethoscope. The Model 3000 has
been a great buddy to me and I only wish it had been around earlier in my medical career.
- Dr. Richard Baldwin, Douglas Pediatric Associates PC, Douglasville, Georgia
I am currently in training to be an EMT, and was searching the internet a couple of months ago for a
stethoscope that would enable me to hear heart and lung sounds in the back of a screeching ambulance. After reading about and trying the
Littmann Model 3000 I was instantly hooked, and now feel as though I can't do my job without it. The amplification properties allow me to
hear critical body sounds even in the loudest of emergency situations. I have encouraged my entire department to try the Model 3000,
including the Chief, and everyone has become a huge fan - some are even planning to buy their own soon. If something were to happen to this
scope, I would immediately run out and buy another one – that's how valuable the Model 3000 is to me.
- Paul Conley, EMT in training, Saylersville Fire & Rescue, Kentucky
Until I entered nursing school, I didn't realize that I have small ear canals as well as a slight hearing
deficiency. After browsing the Internet I came upon information about the Littmann Model 3000 that seemed perfect for my needs, and was happy
to learn that I could try this scope through the loaner program before committing to the purchase. As soon as I tried the Model 3000 I knew I
had to buy it – its amplification properties and assortment of different-sized ear tips make it the ideal stethoscope for my needs. I also
love the fact that I can change the settings with one hand, so I can use my other hand to check a patient's blood pressure or perform another
task. I'm currently in my clinical rotation, and every student who I let try my Model 3000 loves it instantly. Count me as a huge fan!
- Catherine Costa, nursing student, County College of Morris, New Jersey
As a nursing student, I understand the necessity of being able to clearly hear breath and heart sounds. I
had been using an acoustic stethoscope in my coursework and was having a great deal of difficulty hearing all sounds, so I spoke to my
instructor about the problem and she let me try out her electronic stethoscope. Instantly I realized that I could hear much better using an
electronic model, so I decided to log on to the Internet and find a version to purchase. Since 3M has a strong reputation for high-quality
products, I visited the 3M Web site to see what stethoscopes it offered. I found that the Littmann Model 3000 appeared to be a perfect match
for my needs, and offered a free trial opportunity so there was no risk involved. As soon as my Model 3000 arrived, I became hooked and
immediately made the decision to purchase it. It's simply amazing how well it works – the scope blocks out virtually all ambient noise, and
it's comfortable too! After trying out my Model 3000, several of my professors said they now want a Model 3000 as well. I highly recommend
the Model 3000 to any nursing student who wants to vastly improve their auscultation skills – and impress their professors!
- Mark Craig, nursing student, McNeese State University College of Nursing
In a multicenter clinical study, doctors rated the 3M™ Littmann® Electronic Stethoscope 3000 Series significantly better than
traditional, non-electronic stethoscopes when comparing the tone and clarity of heart, lung, blood vessel, and bowel sounds.
Cardiologists missed an S3 gallop 40% MORE OFTEN when using a non-electronic, cardiology-type stethoscope than when using
the 3000 Series. Eighty-three percent of cardiologists indicated it was easier to detect/hear an S3 gallop with the Model 3000 than with an
acoustic (non-electronic) cardiology-type stethoscope.¹
Eighty-two percent of cardiologists in a controlled experiment indicated it was easier to detect an aortic regurgitation
(Grade 1 or 2) with the 3000 Series than with an acoustic cardiology-type stethoscope of traditional design ². In that same experiment,
cardiologists missed a Grade 2 aortic regurgitation murmur five times more often with the acoustic
stethoscope than they did with the 3000 Series.
In another experiment, 90 percent of critical care nurses, who were asked to identify
prerecorded normal and abnormal lung sounds, indicated that it was easier to detect abnormal sounds with the Littmann Model 3000 than with an
acoustic cardiology-type stethoscope of traditional design ³. In that same experiment, critical care nurses misidentified whether a lung
sound was normal or abnormal two times more often with the acoustic (non-electronic) stethoscope than
they did with the 3000 Series.
¹ 191 cardiologists, the overwhelming majority of whom had not previously used the Littmann
Electronic Stethoscope 3000 Series, listened to prerecorded heart sounds with and without an S3 gallop of two different magnitudes, presented
in random order and in the presence of 70-75 dB ambient noise. They listened with both a 3000 Series and an acoustic (non-electronic)
² 100 cardiologists listened to prerecorded heart sounds with and without Grade 1 or Grade 2 aortic regurgitation murmurs,
presented in random order in the presence of 70-75 dB ambient noise, using a 3M Littmann Electronic Stethoscope 3000 Series and an acoustic
(non-electronic) high-end cardiology-type stethoscope.
³ 137 critical care nurses listened to, and were asked to identify, prerecorded normal and abnormal lung sounds (with crackles,
wheezes, or rhonchi), presented in the presence of 70-75 dB ambient noise. They listened with both a 3000 Series and an acoustic (non-
electronic) high-end cardiology-type stethoscope.
The 3M™ Littmann® Electronic Stethoscope Model 3100's exceptional sound capabilities deliver an exceptional auscultation experience. Clinical evidence shows that it's easier to detect difficult-to-hear heart sounds, like S3 gallops, aortic regurgitation murmurs, and abnormal lung sounds. The user interface is incredibly simple, and non-disruptive to the auscultation workflow. It all adds up to a great auscultation experience. Hear it. With confidence.
Incredibly simple. Non-disruptive to your auscultation workflow. The Littmann® 3100 and 3200 models are easy-to-use for quick auscultation every time.
Push the power button to power-on instantly. Push it again to activate the backlight,
perfect for low-light conditions. Your stethoscope will automatically enter sleep mode after a period of inactivity, or hold down the power
button to completely turn off power.
Amplify sounds up to 24 times more than the Littmann(R)
Cardiology Series stethoscopes. Amplification, combined with Ambient Noise Reduction and Frictional Noise Reduction Technologies, allows you
to concentrate on the soft sounds you need to hear. Use the + and - signs to increase or decrease sound amplification.
Change between bell and diaphragm frequencies using the filter button.
Customize and manage start-up settings.
Proprietary Ambient Noise Reduction (ANR)
proprietary Ambient Noise Reduction Technology is automatic. It's always working when your stethoscope is on.
The LCD display depicts remaining battery life and starts blinking when approximately two days of use remain. Low-
battery does not affect sound quality. Changing out the battery is an easy, tool-free process. Your stethoscope automatically enters sleep
mode after a period of inactivity. The battery lasts for approximately 60 hours of continous active use.
View your patient's heart rate on the LCD display.
Bluetooth® technology (Littmann® model 3200 only)
Transfer Sounds for further analysis. M button starts up Bluetooth® technology to wirelessly transmit heart and lung sounds to your PC for further analysis or transfer to patient records. Quick and simple. No cords required. M button may also be used to record and store an interesting sound for playback on the stethoscope.
Bluetooth is a registered trademark of Bluetooth SIG.
How Littmann Ambient Noise Reduction (ANR) technology works
Reduces background noise that can interfere with the auscultation experience now up to 85% on average. Ambient noise travels into the stethoscope both through the air and through a patient's body. The Littmann Model 3100's proprietary ANR technology uses both sources of ambient noise to cancel each other out, leaving only the unfiltered sound of the heart, lung or body sound to be heard.
Sound quality so exceptional, you might never go back to your old stethoscope.
Clinical evidence shows the 3M™ Littmann® Electronic Stethoscope Model 3100 makes it easier to detect difficult-to-hear heart sounds like S3 gallops and aortic regurgitation murmurs, as well as abnormal lung sounds. Here's why:
Ambient Noise Reduction
It cancels out, on average, 85% of ambient background noise that can interfere with the auscultation experience, without eliminating critical body sounds. So youre much less likely to miss the sounds you need to hear in noisy work environments. A full 13% better than previous models.
Acoustic Seal Eartips and Tubing
Not only do our patented 3M™ Littmann® Snap Tight Soft-Sealing Eartips provide a comfortable fit, they also create an excellent acoustic seal, as does our tubing. It means a tighter seal from ambient noise entering through tubing and eartip connections.
State-of-the-Art Sound Sensor
Built to stringent specifications, it provides a life-like 3M™ Littmann® sound experience similar to a high-end cardiology stethoscope. Positioned at the base of the tubing, the sensor brings the sound more naturally to your ears.
Frictional Noise Reduction Technology
A number of changes in the chestpiece help reduce handling noises compared to earlier electronic stethoscopes. Its less distracting. So it helps you focus more on what you need to hear.
Up to 24X Sound Amplification
Extra listening power for those times when you need it; may be helpful when a heart, lung or body sound is especially faint; when a patient is obese; or when a patients clothing restricts your listening experience.
Explore the 3M™ Littmann® Electronic Stethoscope Model 3000 Series in our interactive demo.