Guesswork-free 2-way Humidity Control Proper humidification is of the utmost importance when it comes to acoustic-stringed instruments, but keeping humidity within the golden range of around 45% can be a real challenge. That’s why scores of Sweetwater musicians entrust their treasured acoustic instruments to the D’Addario Humidipak system, a guesswork-free means of 2-way humidity control that ensures constant 45% RH (relative humidity) while your instrument is in its case. What does 2-way mean? Like most humidity systems, Humidipaks raise your humidity level when the room gets too dry for comfort. However, Humidipaks also lower the RH of your instrument’s case when humidity begins to climb out of the 45% range.
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