quarter tone revolution

Play beyond your limits.

Quarter tones on every note and scale.
Now for only $369 $267.

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QUARTBACK nano

Premium note shifter, refined and crafted by
professionals engineers

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explore new range

Give your music unlimited possibilities
with wider tone range.

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live conversion

Convert notes easily when you are playing live

instruments

Connect with any electric-melodic instruments

new patent

Innovative and fully patented technology

Low latency

Super low latency and accurate notes

ARTICLES

Learn more about the rich culture
of the quarter tone music.

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