Just added this infamous Tycos to my collection. I recently came across a research study dealing with the performance of various stethoscopes on the market and this particular model of Welch Allyn was ranked at #6. Which I totally disagree with! I think it is very comparable to the Littmann Cardio 3. However, it is lighter, better looking, and easier to fold into a white coat pocket. The sound quality is very crisp for both low and high frequencies, and can be easily switch to a pediatric chestpiece (for some reason mine did not have all the accessories, so you may want to double check).