Any decent headphones can play the masked track.
As said before often, ultrasonic is bad for headphones use because the volume can change by accident easily. Shannon has stated this often since September 2013, and they aren't advised for headphones use. Causing either no results due to it being too low, or hearing damage from it being too high. Or even situations where it's stopped or paused and you don't even know until way later on, wasting all that listening time.
Headphones masked is excellent, pretty much any headphones can play that fine as it's within the range of normal human speech. No unique requirements for masked are needed.
As said before often, ultrasonic is bad for headphones use because the volume can change by accident easily. Shannon has stated this often since September 2013, and they aren't advised for headphones use. Causing either no results due to it being too low, or hearing damage from it being too high. Or even situations where it's stopped or paused and you don't even know until way later on, wasting all that listening time.
Headphones masked is excellent, pretty much any headphones can play that fine as it's within the range of normal human speech. No unique requirements for masked are needed.
