How many decibels do IQbuds BOOST block? Follow IQbuds BOOST block approximately 14 dB of passive attenuation. Related articles Do IQbuds BOOST have noise cancellation? Can I pair my IQbuds to more than one device? What version of Bluetooth do IQbuds BOOST have? Why is the Tap Touch disabled when I first take the IQbuds BOOST out of the Charge Case? What is Focus and how do I use it?