1. Minimize CPAP Noise. Placing your CPAP on a foam pad or towel can help lessen the intensity of the vibration. A hose cover like a SnuggleHose may also help muffle CPAP sound.

2. Reduce Airflow Noise. Masks can be a source of sound, especially if you are experiencing leaks. Mask liners may help prevent leaks while lessening facial marks. You may also consider replacing your mask cushion if it no longer holds a proper seal.

3. Location Makes a Difference. Placing your machine lower than ear level may reduce the sound heard. Try using an 8 or 10 foot hose for more range. 

4. Purchase a Qtube. The Qtube muffles the windy noise created by the small motor in the Z1.