ATOM amplifiers adopt the most exemplary Korean Class-D performance, reliability, and footprint of the original ATOM and iOn platforms. At first glance, youâ€™ll notice several key improvements. ATOMâ€™s signal inputs, power/ground, and speaker connections are all relocated to the chassisâ€™s leading edge for an easier, more appealing install. All pre-amp & crossover options are conveniently located on the backside. You might not notice additions to the circuit board, including improved power supply & output stage components & monoblock bridging capability.