ATI AT4002 Morris Kessler Signature Amplifier Stereo 200Watts/channel

AT4002 Morris Kessler Signature Amplifier
Amplifier Technologies,
Inc., the prolific manufacturer of many of the high end audio’s best
amplifiers added a new series of amplifiers designed by their president
and chief engineer, Morris Kessler. The 4000 series amplifiers,
available with 2 to 7 channels, share the design philosophy and circuit
sophistication of ATI’s award-winning 6000 Series amps with power output
reduced to 200W RMS per channel at 8 ohms and 300 W RMS at 4 ohms.
Furthermore, their “signature series” designation with a facsimile of
Kessler’s signature on the main panel attests the special nature of
these amplifiers.
Beyond Kessler’s personal identification, these amplifiers share these key features with the 6000 Series Signature amps.
1.
Fully balanced, differential amplifier design with two output stages
per channel but with only a single input stage. The advantages of
balanced designs are retained and noise is further reduced by 50%.
2.
Current feedback instead of the more common voltage feedback. The
reason: current feedback amplifiers are faster with virtually unlmited
slew rate and are better able to reproduce today’s best music and film.
3.
Thermaltrak output devices: Unlike traditional designs where external
diodes attached to the heat sink track the amplifiers operating
conditions to adjust bias, Thermaltrak devices have the diodes in the
same package as the transistors so bias is optimized in real-time.
4. Dual DC servos per channel to control DC offset.
5. Dual toroidal transformers with independent secondary windings. Electrically, each amplifier channel has its own transformer.

Rated
at 200 Watts RMS from 20 Hz to 20 kHz with no more that 0.03% THD at 8
ohms with all channels driven and 300 Watts RMS at 4 ohms under the same
conditions. Signal-to-noise ratio is typically 126 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.

Amplifier
Technologies owns the ATI, Audioaccess, B&K, BGW and Theta Digital
brands and designs and manufactures state-of-the-art audio components
for its own and other brands in its facility in Montebello, CA. Guided
by legendary amplifier designer Morris Kessler, ATI offers both
performance and value in audio components.
FEATURES 
Remote Trigger: Activated from 3.3VDC to 24 VDC via a heavy-duty relay
Protection Circuits: Optically - coupled with full automatic reset.
Toroid
Transformers:40% more efficient than EI type. Separate bi-filar
windings for each channel guaranty lower noise and crosstalk.
Circuit Boards: Double-sided, FR-4 glass-epoxy, computer-grade boards are assembled in-house.
Soft
Start Circuitry: Ultra soft turn on reduces in-rush current to a
minimum. Multiple units can be turned on without tripping circuit
breakers eliminating the need for sequencing.
Power Transistors: High-current, bi-polar and ThermalTrak output transistors insure optimized performance in real-time.
Power Supply Capacitance: 46,200 µF (microfarads) per channel.
Power Cord: Detachable, 3-wire cord.
No lowballers please.