The Chinese company Edifier has been putting out affordable high-quality audio equipment for more than 25 years. I often find it hits the “high-value” button with many of its products, offering great sound and solid features at relatively low prices. The company seems to stake out that same territory with its W820NB ANC Bluetooth Stereo Headphones. Edifier sent me a pair of the cans to try out. While they’re not likely to blow anybody away, they get the job done well, with quality sound, strong active noise cancellation and long battery life. If you want good sound at a good…