Audio Technica on Friday announced the upcoming release of a number of headphones that range from the entry-level earbuds to the ultra high-end meant for audiophiles. Starting at the top is the ATH-A2000X set that includes 53mm (about 2.1in) diameter drivers and deliver frequency response of 5Hz-45kHz. They also share their 42-ohm impedance level and maximum loudness of 101dB with the slightly les
