MDF Instruments cardiology stethoscopes will offer the best sound quality compared our other models. Eight patents and various features designed to improve sound quality, will enhance high and low frequency sounds, making it easier for you to hear the details. Our ProCardial is a high quality stethoscope and hospital grade stethoscope, perfect for any professional. Choose attachments for pediatric and infant patients to interchange the diaphragm and bell of the stethoscope, depending on your patient. The ProCardial is our best stethoscope for veterinary use with the interchangeable attachments, but also our best type of stethoscope for nurses, doctors and any professional.