The phrase "headphone market" refers to the industry or business of buying and selling headphones. It includes all the companies, brands, and products related to headphones. Full definition
Another, more pervasive problem in the wireless headphone market is making sure the microphone blocks background noise outdoors. (heavy.com)
Now over the last many years there has been a mad rush for these products in many industries such as smartphones, personal computers, and audio headphone markets. (androidheadlines.com)
This will most definitely change in the future as competition heats up within the wireless headphone market, but for now it definitely holds true. (xda-developers.com)