Littmann 3000 Electronic Stethoscope with Ambient Noise Reduction Review

If compared to what I think is the best acoustic stethoscope overall (the Littmann Cardiology and Cardiology II), than the 3000 has advantages and disadvantages. On the flip side, the 3000 has a very sleek, non-chill, easy-to-clean/desinfect and an always "seal-with-the-skin" diaphragm with the convenience to switch from "diaphragm-mode" to "bell-mode" and back with a button without the need of turning the chestpiece. Also advantagious is that you don't have to watch the pressure you put on the chestpiece in "bell-mode", which is essential in an acoustic steth. So much to the pros!
Now, the down side is that it needs a battery, it won't withstand physical abuse (e.g. ground fall), it is amplifying everything and not only the noise you want to hear, which puts it's purpose ad absurdum. The heartsounds are not as crisp, e.g. not as easy to hear a splitted S1, always a background noise that can actually immitate a murmur and expensive. Every single contact of fingers, gowns, cables etc. with the chestpiece is mercilessly beeing transferred to your ears. It feels light, almost cheap and is not ment to be made to follow your carreer over 35 years and more. So, inferior in acoustic and inferior in design/make gives the 3000 only 3 stars.

Off note, I think that the quality of the Cardiology III and the Master is not as good as Cardiology/Cardiology II either. Littmann has changes the bell shape in the III, the tuneable diaphragm is nonsens and the Master sounds muffled with or without pressure on the chestpiece.

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Product Description:
3M's new Ambient Noise Reduction technology reduces distracting room noise by an average of 75% without eliminating critical body sounds. This stethoscope is uniquely equipped to help you pick up difficult-to-hear heart, lung and other body sounds. How Ambient Noise Reduction works The proprietary Ambient Noise Reduction (ANR) technology, internal to the chestpiece, acoustically cancels out an average of 75% of distracting room noise, greatly enhancing overall utility. This acoustic canceling effect is different from electronic filtering, which may also filter out some portions of body sounds clinicians need to hear. Unique Design Because of the unique design of its diaphragm and sensor, the Model 3000 can be used comfortably on all body types and sizes. The versatile chestpiece can accommodate infant, pediatric and adult patients, and it is ergonomically designed for easy hand manipulation and patient comfort

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