D'Addario PW-HPRP-24 Humidipak Std Replacement 24Pk bass-compressor Frequency Response: 10 Hz -

Frequency Response: 10 Hz - 100 kHz

25" compression driver (titanium) inside its fully wooden birch enclosure

For standard latching operation: Tap the footswitch once to activate the effect andthen tap again to bypass

Both the height and angle of the backrest unit are adjustable

D'Addario PW-HPRP-24 Humidipak Std Replacement 24Pk bass-compressor Frequency Response: 10 Hz -D'Addario Humidipak Maintain, Replacement 24 Pack The D'Addario Humidipak is the only maintenance free, two way humidity control system for guitar. It automatically maintains the optimal 45 50% relative humidity level within your instrument case, eliminating the guesswork and potential mess related to refilling a humidifier. Unlike refillable humidifiers, the Humidipak system provides true two way purified humidity control by adding and removing