Sennheiser CX 400BT review: Great-sounding mid-range wireless earbuds

Sennheiser CX 400BT review: Great-sounding mid-range wireless earbuds
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Sennheiser says the CX 400BT has the same “acoustical system” as the Momentum True Wireless 2. That includes the 7mm “dynamic drivers” the company used in the pricier model. The sound quality is quit…
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