I've had my Littmann for 14 years. It's very durable and I can't imagine doing my job without it. So when the tube cracked three years ago I purchased that assembly through Allheart and was very pleased at the price and speed of delivery.
Well the diaphragm cracked on the side about a month ago. I taped it together, but last week it just fell apart. While at work I ordered the replacement diaphragm and it came right away, on my day off, so I didn't have to work without my prized Littmann Master Cardiology!
The diaphragm was on sale, arrived at my home in time, and works like a charm. I'm am very pleased! Thank you Allheart!