These days, Monster’s huge Beats lineup is impossible to ignore. The base model has been rebranded Studio, and still sells for $350, a princely sum by headphone standards. Active noise cancellation is built into this headset, literally requiring you to keep twin AAA batteries inside the left earcup at all times, and a power switch on the right earcup turned on if you want to listen to your music; like Bose’s QuietComfort series, the audio…
