A noise-isolating design helps to reduce ambient sound levels naturally for focused listening. Sennheiser acoustic tuning provides a signature sound with deep bass and balanced clarity across frequencies. The integrated 3.5mm jack provides wide compatibility with tablets, laptops, and mobile devices.

The Sennheiser CX300 II is a discontinued precision in-ear earphone — now available as genuine last UK stock. Passive noise isolation, deep bass, asymmetrical cable design. A true Sennheiser classic.

✓ Passive noise isolation — in-ear seal blocks ambient sound
✓ Enhanced bass with dynamic neodymium driver
✓ Asymmetrical cable — ergonomic, tangle-resistant
⚠ Discontinued model — genuine UK stock, limited availability

The Sennheiser CX300 II precision in-ear earphone is a discontinued Sennheiser classic — engineered for audiophiles and everyday listeners who refuse to compromise on sound quality. Now available as genuine last UK stock at Maibo.

Sound
Powerful Bass, Crisp Highs
High-quality dynamic neodymium drivers deliver enhanced bass with detailed mids and crisp highs. The Sennheiser CX300 II handles every genre — deep bass in electronic, natural tones in classical and jazz.

Isolation
Passive Noise Isolation
In-ear seal design blocks ambient noise without active electronics. Three silicone eartip sizes (S/M/L) included — find your perfect fit for optimal passive isolation whether commuting or working.

Design
Asymmetrical Cable Design
Ergonomic asymmetrical cable reduces tangling and cable clutter. The 1.2m tangle-resistant cable is built for daily on-the-go use. Compact and stylish in classic Sennheiser black.

Technical Specifications

Driver TypeDynamic, Neodymium
Frequency Response19 – 21,000 Hz
Impedance16 Ohms
Sensitivity113 dB
Cable Length1.2m Asymmetrical
Connector3.5mm Stereo Jack
Noise IsolationPassive – In-Ear Seal

Box Contents

—

Sennheiser CX300 II In-Ear Earphones – Black
—

3 Pairs of Silicone Eartips (S/M/L)
—

User Manual

Compatible With

—

All smartphones with 3.5mm headphone jack
—

MP3 players, tablets, laptops
—

Windows and macOS devices

Condition
Brand New — Retail Packaging

Warranty
12 Months Seller Warranty

Delivery
4–5 Working Days · Fully Tracked

The Sennheiser CX300 II remains one of the most sought-after discontinued earphones in the UK. Genuine stock, fast delivery, 12-month warranty — only from Maibo.