Audio Technica is dropping a pair of high-end headphones aimed at audiophiles critical ears. The ATH-A1000X (left) sports a 53mm driver with a frequency response of 5Hz-42kHz at an impedance of 42Ω. The slightly high-end ATH-A2000X (right) share a similar aluminum housing and a 53mm driver, but carries not only a higher price tag, but also a frequency response range of 5Hz-45kHz. The high, high-end A2000X model is going to drop on December 5th, for 78,750 yen ($779 USD) while the high-end ATH-A1000X has the same release date, but also a lower price of 60,900 yen ($603 USD).