The AT522NC amplifier breaks new ground. It’s the first ATI amplifier to use micro-processor control for turn-on delay and feature automatic AC voltage recognition and configuration. The amplifier recognizes whether it’s hooked up to 120V or 220V nominal power and automatically self-configures. The amplifier also incorporates a new and novel “sleep” circuit. When the amplifier receives no input signal for a period of 10 minutes, power is removed from the output modules and a front-panel LED begins to flash. As soon as an input signal is detected on any channel, normal playback operation resumes instantaneously.
Per Morris Kessler, ATI’s president and chief engineer, “We are excited to offer amplifiers with ATI’s legendary high performance and reliability in designs that reduce amplifier weight by up to 50%.”. And, with rated distortion below 0.05% and signal-to-noise ratio of 123 dB (minimum, referenced to rated output), each amplifier in the series is capable of playing back the full dynamic range available on today’s lossless recordings.
All NC Series Amplifiers are Class D using N-Core Technology and Linear Power Supplies with Automatic 117 / 230 Voltage selection in a 3 RU chassis.
Because Class D Power Amps are 90% efficient, they can convert 90% of the electricity they consume into watts you can hear, only 10% of the electricity turns in heat Class AB Power Amps are 50% efficient, they can convert 50% of the electricity they consume into watts you can hear, the other 50% is dispersed as heat into the air by large heat sinks that channel the heat away from the amp.
You can see in this picture of the Class AB ATI 4002 Signature Series and the AT522NC Class D, the Class D design requires a much smaller chassis because it stays cool during operation which translates into a lower production cost and retail price with no sacrifice in performance. In fact, today’s Class D amps outperform the Class AB designs with lower distortion and noise, lower weight, and much lower cost. Its modern thinking at its best. More power, less money, better sound….that’s ATI Class D power amps.