This is mine – a cheap (£4!!!) job from Amazon. However it is absolutely fine and I can hear perfectly when carrying out cervical auscultation.
Cervical Auscultation is controversial assessment tool. However, the studies I’ve seen are studying it’s ability to identify penetration/aspiration as a standalone method. I find it a useful adjunct to my swallow assessments – I palpate and auscultate and observe behaviours, and use all three to make my judgements.