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24/01/2019 Wedemark/Anaheim


At NAMM, Sennheiser has unveiled the latest members of its family of professional in-ear monitors, the IE 400 PRO and IE 500 PRO. They offer natural, high-resolution sound, a secure and comfortable fit that comes close to custom-molded in-ears and a break-proof, patent-pending cable connection. These new models are set to become firm favorites with musicians, DJs and sound engineers alike. Made to exacting specifications at Sennheiser’s German factory on a brand-new production line, the IE 400 PRO and IE 500 PRO will be available from March 2019.

The IE in-ear range (L>R): The IE 40 PRO, launched in 2018, and the upcoming IE 400 PRO and IE 500 PRO
Sennheiser’s wideband transducer ensures distortion-free, natural sound as it is free from the cross-over effects of balanced armature drivers
The Sennheiser high-performance driver covers a much wider frequency range than the typical balanced armature driver
Sennheiser’s brand-new stage in-ears, the IE 400 PRO (pictured) and IE 500 PRO offer a precise, natural sound for critical monitoring applications
“It felt like I'm not wearing them, to be honest. The more I played, the more I started feeling how nice they really are. Low mids, really clean, super subs are really sweet, the high-end isn't too scratchy, nice response. It is balanced, has chunky vibes. That's what you need.” FINK (Fin Greenall, Singer/Songwriter) on the IE 500 PRO
The Sennheiser IE 500 PRO
The patent-pending connector of the IE series substantially reduces the risk of cable breaks
The accessories delivered with the IE 400 PRO and IE 500 PRO

“When a show or gig is underway, monitoring is crucial,” said Jannik Schentek, product manager with Sennheiser. “Beyond connecting you with other musicians, in-ears connect you to yourself, allowing you to improve the way you perform. The IE series has been designed with this goal in mind, and the new models offer several stunning features that let users excel in their art.”

The philosophy behind the design

“For the IE 400 PRO and IE 500 PRO, we have reinvented the single dynamic driver principle. Other in-ears in the same price range work on the balanced armature principle, which we find to be inferior to a wideband dynamic driver,” explains Schentek. “Balanced armature earphones – a technology borrowed from hearing aids where small packages are crucial – require multiple drivers to reproduce the frequency range, and this may lead to cross-over effects and phase differences between the individual drivers. The IE 400 PRO and the IE 500 PRO, on the other hand, use a single high-performance dynamic driver that covers the entire frequency range with ease, resulting in a distortion-free, detailed and accurate sound reproduction.”

Sound profile

This single-driver technology, termed TrueResponse, ensures a completely natural, clear and spacious sound stage with a total harmonic distortion (THD) as low as under 0.08% at 1 kHz and 94 dB. When the sound is so precise and detailed, the acoustical stress for the wearer is reduced, and they discover that they can set their monitors to a lower level. Even so, the sound still has punch – even in the loudest of surroundings. This enables musicians to critically monitor their sound and to fully concentrate on their performance.

Comfort and fit

With the driver measuring only 7 mm in diameter, the IE 400 PRO and IE 500 PRO feature a comfortable ear mold, which is ergonomically shaped, has a low profile and is extremely lightweight.


The in-ears come with silicone ear adapters in various sizes and a pair of special ear tips made from memory foam, which expand to perfectly fit the ear canal. In addition, the earphones’ ‘sound tunnel’ has two rest positions to attach the ear tips to, to accommodate the variances in length of human ear canals.


This results in a secure and comfortable fit that comes very close to custom-made ear molds. Moreover, the perfect sealing provides powerful bass reproduction and a reduction in ambient sound by up to 26 dB, protecting the wearer against excessive stage sound.

Patent-pending audio connection

Like every in-ear in this professional series, the IE 400 PRO and IE 500 PRO are fitted with a break-proof inner cable duct (patent pending), that has the cable’s sturdy anti-kink sleeve sit directly on the ear mold, providing a long-lasting solution for the rigors of stage use. For easy distinction, the right ear mold has a red ring at its cable connection.


Both new models have a detachable cable with a reinforced ear hook. While the IE 400 PRO comes with a black, straight cable, the IE 500 PROs are fitted with a clear, twisted-pair cable which provides optimized resistance to structure-borne noise.

IE 400 PRO vs. IE 500 PRO

Asked about the difference in sound between the two models, Jannik Schentek commented: “The biggest difference is in the mids, really. Between 1 and 2.5 kHz, the IE 500 PRO has more presence and sounds much more direct, thus opening up a very wide and deep sound stage that allows artists to more easily localize themselves in the mix. Furthermore, it has a wider frequency response and a few extra dBs of sound pressure level – which can be crucial on loud stages.”


The IE 400 PRO and IE 500 PRO will be available from March and retail at EUR/USD 349 and EUR/USD 599, respectively. Both models are available in a clear and a smoky black version. They come complete with a handy transport case, memory foam and silicone ear tips, a cleaning tool, and a 3.5 mm (1/8”) to 6.3 mm (1/4”) jack adaptor.


Visit Sennheiser and Neumann at NAMM, Anaheim Convention Center North, Level 1, Booth No. 14108.

Global Contacts

Stephanie Schmidt
Professional Systems
Tel: +49 5130 600 1275

Local Press Contact

Jeff Touzeau
Tel: +1 914 602 2913

塑造未來音頻並為客戶創建獨特的聲音體驗-這就是Sennheiser全體員工和全球合作夥伴共同的目標。成立於1945年的Sennheiser一直是全球範圍內耳機、咪高峰和無線傳輸系統產品製造廠商中的佼佼者。公司在50多個國家中擁有21個銷售公司和長期的貿易合作夥伴,並且在德國、愛爾蘭、羅馬尼亞和美國擁有自己管理和控制的產品生產基地。自2013年以來,Sennheiser公司開始由Daniel Sennheiser和Dr. Andreas Sennheiser共同管理,成為了家族企業的第三代管理者。在2017年,Sennheiser集團的整體營業額達到了6.667億歐元。