D'Addario Acoustic Guitar Humidifier with Digital Humidity & Temperature sensor Classical Strings the Q CV input allows

the Q CV input allows modulation of Q and resonance

And when you need to step out front

A Must-Have for Your Bag of Tricks

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D'Addario Acoustic Guitar Humidifier with Digital Humidity & Temperature sensor Classical Strings the Q CV input allowsThe number one cause of major guitar repairs is lack of humidification. Humidifying your guitar is an essential step in maintaining your instrument. The best selling D'Addario Acoustic Guitar Humidifier makes it easy to properly and safely humidify your guitar. The Humidifier hangs safely in the sound hole suspend by the instruments strings so it never touches the body of the instrument. Simply moisten the sponge, install and that's it. The humidifier