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Mi-Si

battery-free acoustic amplification

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Our Story

Mi-Si was founded in 2004 by experienced team of engineers with the passion and the drive to make music technology better – for both artists and music lovers. With more than 50 years of combined experience, Mi-Si brings unceasing innovation to the field of…

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PRODUCTS

Mi-Si’s deep and broad line of products will appeal to you no matter your playing style.  Scroll below to learn more! Acoustic Trio Simple Jack & power charger with L.R. Baggs acoustic guitar pickup The Mi-Si Acoustic Trio system features an active, battery-free preamp…

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Contact

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NAMM 2026

Anaheim, CA – The NAMM 2026 was a success for Mi-Si. We have for first time showcased the ActivatorTM in the NS Fin GT6 electric guitar by NS Design, as well as its systems on guitars by Avalon Guitars. The multitude of artists, industry…

 Posted on January 25, 2026

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 Posted on October 13, 2025

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Ned Steinberger with Kris Barocsi at Guitar Summit 2025

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NS Design Unveils NS Fin Bass

Mi-Si is honored to be partnering with NS Design in launching new carbon fiber 6-string NS Fin Bass at the Guitar Summit in Mannheim, Germany. It features the revolutionary ActivatorTM circuit designed by Mi-Si – powered by supercapacitors and providing up to 12dB boost….

 Posted on October 2, 2025

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Partnership with C.F. Martin

Mi-Si Partners with C.F. Martin Mi-Si is pleased to be collaborating with C.F. Martin on the new TKE Tenor Ukulele line. We cannot be but honored by this and look forward to making music beautiful together. The TKE Uke is Martin’s latest addition to…

 Posted on January 25, 2024

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