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Currently the TWS/1 is not available. For more information about the product click the buttons below.
Press Reviews
„Compliments to Mr. Grell! He made a fantastic debut with the TWS/1. The sound is world class, you can't do much better.“
CONNECT (3/2022) Christian Möller
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Working with the app went smoothly. The touch controls worked fine. At the price, the TWS/1 is a blast!
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„Axel Grell Creates Some Of The Best Wireless Earphones You'll Ever Hear.“
FORBES (1/2022) Mark Sparrow
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„... the TWS/1 surpasses many in-ears that are at least a hundred euros more expensive in terms of sound and ANC quality.“
C'T (issue/22 2021) Hartmut Gieselmann
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„...the Grell Audio TWS/01 revealed such a balance and joy of playing ...“
STEREO GUIDE (4/2022) Stefan Schickedanz
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In the listening test, the Grell Audio TWS/01 revealed such a balance and joy of playing paired with a rich, clean bass that sometimes the feet moved rhythmically under the table. With every note you could feel the extraordinary talent and experience of the former Sennheiser developer. With the first headphone under his own direction, he delivered a solid performance in every respect. Outstanding is not only the exemplary tonal tuning. However, the feeling of the highest level of naturalness was by no means based solely on the timbres, which also predestined the TWS/1 for classical music and jazz with natural instruments and complex vocals. The combination of transparency and high level of detail also contributed to the extremely appealing listening experience. We also liked the spacious sound reproduction for in-ear conditions. The comfortable fit also contributed to the fact that you could listen to the grell for a long time without getting tired. ...A rock-solid true wireless in-ear with active noise cancelling, individual sound tuning via the Sonarworks app and a very long battery life for 200 euros from a German manufacturer - you don't get that every day.
STEREO GUIDE (4/2022) Stefan Schickedanz
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„Best-in-class sound without an overbearing price.“
SOUNDGUYS (6/2022) Chase Bernath
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Axel Grell is a legend in the personal audio space, having crafted some of the highest quality headsets in the world. … If there's one thing former chief headphone engineer of Sennheiser Axel Grell knows, it's how to create a great-sounding headset.
The TWS/1 is deeply connected with the SoundID app from Sonarworks - the specialist for consistently good sound in recording studios. It enables the TWS/1 to adapt to the acoustics of the listener´s individual ear geometry. The individual settings made with the SoundID app remain in the TWS/1 until they are changed or switched off, so the user enjoys personalized sound with any Bluetooth source! And the app offers the possibility to install new firmware. SoundID is available for iOS and Android.
Watch the video on YouTube
The SoundID app can be accessed via Google Play and Apple Store. This link also provides more information: