How many decibels do IQbuds BOOST block? Follow IQbuds BOOST block approximately 14 dB of passive attenuation. Related articles Single Bud Use with IQbuds BOOST 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?