The Sennheiser IE 40 Pro are the antithesis of the modern earphone. No wireless, no active noise cancellation, and a focus on the “pro” buyer
What are the Sennheiser IE 40 Pro?
The Sennheiser IE 40 Pro are quite unlike most Sennheiser earphones, and most other pairs released today. They aren’t wireless and, as part of the “Pro” line, you’re more likely to see them on sale at a music equipment shop than one selling electronics.
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