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Sennheiser IE300 In-Ear Headphones

Enjoy a superior, high fidelity listening experience with Sennheiser's high-performance wired in-ear headphones.

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High Fidelity Performance

The IE 300 is an innovative high-fidelity earphone, purpose-built for today's audio enthusiast that listens with an evolving collection of gear. Featuring a host of ground-breaking acoustic technologies that supercharge our 7mm XWB transducer, it creates an effortlessly balanced audiophile listening experience wherever you want one.

Detailed Sound Everywhere

The driving force of the IE 300 is a refined version of our Extra Wide Band (XWB) 7mm transducer, revered for its breathtaking acoustic performance in a deceptively compact package. A new blend of materials in the diaphragm improves its rest-and-response times for greater accuracy throughout the frequency spectrum. When resonances are minimized, the enhanced speed brings clarity to higher frequencies, subtly warm mids, and clean bass response with low harmonic distortion. Transients are tight without harsh frequency smearing, letting vocals retain their silky character directly from the master recording to your mind. The XWB transducers reproduce sound that is completely unique to the Sennheiser audiophile legacy—which is no surprise as they are developed and manufactured with exacting precision at our world-class facility in Germany. Although diminutive in size, its output sounds larger-than-life, offering intimate access to your favorite tracks.

Air Traffic Control

A key element of the IE 300's balanced acoustical performance is the back volume - a miniature room-within-a-room that helps manage the flow of air. The direction and overall volume of air is controlled with precision as it travels through and exits the acoustical system. Further, a frequency absorbing resonator chamber was applied to overcome masking effects that regularly occurs in the ear canal, unearthing nuanced audio details previously buried in the source signal.

It's All About Connection

Sennheiser's engineers were tasked with delivering peerless sound AND dependability. They started with ultra-durable gold-plated Fidelity + MMCX cable connectors and seated each within a recessed, 4.8mm-wide socket for outstanding strain relief. The para-aramid reinforced cable is rated for thousands of bend cycles, adding exceptional durability to the overall listening experience. Included are (3) sizes of silicon ear tips and (3) sizes of memory foam tips to conform to the unique shape of your ear canal, maximizing noise isolation.

In-Ear Peace

The IE 300 ensures that you can enjoy a thrilling hi-fi experience wherever you are. Imagine having a personal, expertly tuned listening room at your command—ready to provide sonic bliss at a moment’s notice. Because the IE 300 shields you from ambient noise, your music stays in control of every listening session. The reduction of ambient noise diminishes ear-fatigue for better, longer listening sessions in practically any location you could dream up.

Professionally inspired

Included with the IE 300 are (3) sizes of silicone ear tips and (3) sizes of memory foam ear tips—the latter conform to the unique shape of your ear canal for maximum noise-isolating performance. In fact, the IE 300’s design was inspired by performing musicians and their need for universal in-ear monitoring systems with an enduring, comfortable fit. Though you may never physically set foot on a live performance stage, your audiophile ear will appreciate the IE 300’s ability to keep up with your lifestyle on the move.

What's Included

• IE 300 In-Ear Headphones

• Cable with MMCX Fidelity plus connectors and 3.5mm plug

• 3 pairs of silicone ear adapters (S, M, L)

• 3 pairs of foam ear adapters (S, M, L)

• Storage case

• Cleaning tool

• User manual


• Style: In-ear

• Transducer Type: Dynamic Driver, Pressure Chamber

• Transducer Size: 7mm

• Frequency Response: 6-20,000Hz

• THD: < 0.08% at 1 kHz/94 dB

• Sound Pressure Level: 124 dB (1 kHz/1Vrms)

• Impedance: 16 ohms


About Sennheiser

You can't go wrong with any Sennheiser product, from the classic HD 660S to the detailed HD 800S. Sennheiser's headphones are known for quality, comfort, and a sound signature that can please any taste.