Source: Press Release, Last Accessed: 2014/10/20

Amplifier Technologies' new AT6000 Morris Kessler Signature amplifiers are available in two through seven channel configurations and feature ATI's Pure Balance design with current feedback, ThermalTrak bipolar power output devices and servo circuits to null the dc output offset.
The new amplifiers were designed by ATI's president and chief engineer, Morris Kessler and are the company’s first new amplifiers in over a decade. Furthermore, their “signature series” designation with a facsimile of Kessler’s signature on the main panel acknowledges their special nature. According to the press release, as in Kessler’s previous top-of-the-line designs, these amplifiers are also fully balanced, differential amps, but unlike his earlier balanced designs which were essentially balanced bridged amplifiers, the 6000 series uses only a single input stage with dual-differential output stages, offering the advantages of a balanced topology and a noise figure that is reduced by 50%.
The circuit uses current feedback instead of the more common voltage feedback, ThermalTrak output devices (for better temperature compensation and bias control) and DC servos to track and maintain DC offset to insignificant levels.
The new series features a revised PCB layout, still modular with the complete amplifier including the power supply parts on a single card, but optimized for improved signal-to-noise performance. All of the amplifiers in the series use dual toroidal transformers, dual power switches and dual line cords, therefore the AT6002 is now a complete dual-mono design and the amplifiers with many channels, as the 7-channel AT6007, can be hooked-up to two independent 20 amp circuits for greater sustained output power than is possible from a single AC circuit.
All the amplifiers in the 6000 series are rated at 300 Watts RMS per channel from 20 Hz to 20 kHz with no more that 0.03% THD at 8 ohms with all channels driven and 450 Watts RMS at 4 ohms under the same conditions. Signal-to-noise ratio is typically 128 dB referenced to full output so each amplifier in the series is capable of playing back the full dynamic range available on today’s lossless recordings.

For more information: http://www.ati-amp.com/

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