Slide the CX300S earbuds into your ears and enjoy phenomenal sound without distraction from the rest of the world. Three different sizes of adapters ensure a perfect fit. Once they are in you’ll be treated to deep lows and shimmering highs from a wide 18Hz to 21kHz frequency response at a super clean <0.2% THD. SENNHEISER CX300S 3.5MM CONNECTOR CANAL HEADPHONE SALE