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AT6000Series

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ATI Amplifier Technologies - AT 6000 - Multi-Channel Stereo Amplifier

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Details

ATI Amplifier Technologies Inc.

ATI Amplifier Technologies - AT 6000 Series - Multi-Channel Stereo Amplifier

AMPLIFIER TECHNOLOGIES, INC INTRODUCES THE MORRIS KESSLER SIGNATURE AMPLIFIERS AVAILABLE WITH TWO 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. The 6000 series use dual DC servos to track and maintain DC offset. The result: DC in the amplifier’s output is reduced to insignificant levels.

5. These amplifiers use a revised PCB layout. They are still modular with the complete amplifier including the power supply parts on a single card, but now the AC components are on one edge of the board and away from the signal input. The result: improved signal-to-noise performance.

6. 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.

Note: Sound Approach is an Authorized Dealer for the United States only. Visit ATI-AMP.com for a list of International Dealers.

ATI Amplifier Technologies Inc.

Features


	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 output transistors with active bias circuits result in effortless operation. Power Supply Capacitance 59,400 mfd per channel. Power Cord Dual detachable, 3-wire power cord. Included. 7-Year Warranty Parts and labor against defects in parts or workmanship. Dimensions 17 1/4"W X 9 1/2"H X 18 1/2"D (without feet: H=8 3/4") Weight 88 to 138 lbs (model dependent)

Specifications


	SPECIFICATIONS: Series AT6000 Number of Channels 2 to 7 EIA 1kHz Output Power at 8 Ohms* 350 Watts EIA 1kHz Output Power at 4 Ohms* 450 Watts FTC Full Bandwidth Output Power at 8 Ohms 300 Watts FTC Full Bandwidth Output Power at 4 Ohms 450 Watts Input Sensitivity for Full Rated Power 1.95 Volts Frequency Response at Rated Output 20Hz to 20kHz ±0.1dB Phase Response +5 to -15 degrees from 20Hz to 20kHz at 1 watt Signal-to-Noise Ratio “A-Weighted” Greater than 128dB below rated FTC Full Bandwidth Output Total Harmonic Distortion (THD) Less than 0.05% at full rated FTC power; Less than 0.01% at full EIA power at 1kHz Intermodulation Distortion (IMD) Less than 0.05% at full rated FTC power; Less than 0.01% at full EIA power at 1kHz Load Impedance Safe with all types of loads. Rated for 4 to 16 ohms Power Bandwidth FTC +0, -3 db from 5 Hz to 80 kHz Damping Factor Greater than 400 from 10 Hz to 400 Hz Crosstalk Greater than –80 dB from 20 Hz to 20 kHz Gain Voltage gain of 28dB ±0.2 dB Slew Rate >60 V/µs Input Impedance Nominally 50 kΩ Remote Trigger Voltage 3.3 to 24 Volts DC at 5 mA or greater DC Output Offset Less than ±5 mV Power Requirements 120 VAC (other voltages available on export models) Chassis Dimensions (H x W x D) Inches 9½ x 17¼ x 18½ (Without feet: H = 8¾) Net Weight (lbs/kg) Model Dependent 86 to 136.4 / 39 to 62 Shipping Weight (lbs/kg) Model Dependent 96 to 146.4 / 43.6 to 65.5