ATI Amplifier Technologies - AT 6000 - Class AB Power Amplifier

ATI Amplifier Technologies - AT 6000 Series - Class AB Power Amplifier 

Amplifier Technologies, Inc introduces the Morris Kessler signature amplifiers available with 2 to 7 channels. The pure balance™ design uses current feedback, Thermaltrak output devices, and DC servos for improved performance.

The 6000 series amplifiers, available with 2 to 7 channels, are the company’s flagship power amplifiers for over a decade. Furthermore, their “signature series” designation with a facsimile of Kessler’s signature on the main panel acknowledges the special nature of these designs. Beyond Kessler’s personal identification, these amplifiers are new in more significant ways:

1. As in Kessler’s previous top-of-the-line designs, these amplifiers are 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. The reason: the advantages of balanced designs are retained and noise is reduced by 50%.

2. The design uses current feedback instead of the more common voltage feedback. The reason: current feedback amplifiers are faster with virtually unlimited slew rate and are better able to reproduce today’s best music and film sound.

3. Kessler used Thermaltrak output devices for the 6000 series. Unlike traditional designs where external diodes or transistors attached to the heat sinks track the amplifiers operating conditions and use the details to adjust bias, Thermaltrak devices have the temperature sensing device in the same package as the output transistor. The results: bias is optimized in real-time.

4. All of the amplifiers in the series use dual toroidal transformers, dual power switches and dual line cords. The results: the AT6002 is now a complete dual-mono design and the amplifiers with many channels, as in 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 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.

AC Power Connector
The AC input connector provides power to the unit with the supplied power cords. The 120VAC version of the 6000 series amplifiers is supplied with two 15 Amp power cords with standard NEMA 5-15P plugs on one end. The 230VAC versions are supplied with Schuko IEC 60320 with C-19 plug. Some 230VAC versions are supplied with a different plug. 

Please contact us if you wish to order two different length power cables to accommodate a setup using two circuits.

WARNING
Both power cords for at AT6002, AT6003 and AT6004 may be plugged into a single 15 Amp circuit (120VAC) OR 8 Amp (230VAC). Each power cord for the AT6005, AT6006, and AT6007 must be plugged into separate 15 Amp circuits (120VAC) or 8 Amp circuits (230VAC). Separate circuits are connected to different circuit breakers at the service entrance (breaker box) of the building.

Note: We can only ship to addresses within the USA. Visit ATI-AMP.com for a list of International Dealers.