Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unimpressed.

47 y/o MD purchased this stethoscope for office "back up" to my Littman Cardiology and regret purchase. Online positive reviews are overstated - this model is heavy/bulky and has poor acoustics/amplification. Heart sounds are muffled and diaphragm seal is inconsistent.This model is inexpensive and priced appropriately for its low quality. Will spend $175 and buy another Littman in near future.