Inside the Drop + THX AAA ONE Linear Amplifier, distortion is all but defeated. Harmonic distortion, crossover distortion, intermodulation—these unwanted symptoms of electric current are reduced to nearly imperceptible levels through THX’s patented AAA technology. With distortion up to 40 decibels quieter than competing Class-A amplifiers, the Drop + THX AAA ONE transmits audio in its purest possible form to any pair of headphones. Select from three carefully calibrated gain stages to drive sensitive IEMs, high-impedance dynamic headphones, and everything in between. Switch to an all-new preamp output using the dedicated “Pre” button, and pair the Drop + THX AAA ONE with powered speakers or a power amp for crystal-clear preamplification. Finished in a sleek and strong aluminum housing, it’s sure to look (and sound) great wherever you set it.