ATI Amplifier Technologies AT6003

ATI AT6003 Power Amplifier: Ultimate Power and Performance

The ATI AT6003 power amplifier is a high-end device designed to deliver an exceptional audio experience. With its advanced design and innovative features, it positions itself as one of the most powerful amplifiers on the market. In this article, we will explore in detail the key characteristics of the ATI AT6003 amplifier and discover what makes it a top choice for discerning audiophiles.

Symmetrical Class A/B Design: The Key to Balanced Performance

The ATI AT6003 amplifier utilizes a fully symmetrical Class A/B design, which gives it balanced and powerful performance. This design relies on the use of two toroidal transformers and independent secondary windings, which provide separate power supplies for each channel. This eliminates interference and ensures accurate and detailed sound reproduction.

Signature Series: A Symmetrical Approach for Optimal Sound Quality

ATI’s Signature Series dual mono amplifiers adopt a symmetrical circuit configuration. This design approach retains the benefits of symmetrical designs while reducing noise by 50%. With a single input stage and bi-differential output stages, Signature Series amplifiers deliver faithful and transparent sound reproduction.

Current Feedback: Fast Response for an Immersive Experience

Signature Series amplifiers use current feedback rather than voltage, allowing them to respond quickly with a virtually unlimited slew rate. This essential characteristic gives them exceptional ability to accurately reproduce the most demanding musical and cinematic recordings. You can thus fully enjoy your favorite tracks in all their splendor.

ThermalTrak Output Devices: Real-Time Optimal Performance

Signature Series amplifiers incorporate ThermalTrak output devices, which provide an integrated temperature sensing process with the output transistor. This technology enables real-time bias performance, ensuring optimal sound quality even during extended high-volume use. Combined with dual DC servos, these devices reduce DC offset at the output to insignificant levels, guaranteeing accurate and distortion-free sound reproduction.

Power and Versatility: An Exceptional Sound Experience

The ATI 6000 series amplifiers offer a rated power of 300 W RMS from 20 Hz to 20 kHz with a maximum THD of only 0.03% into 8 ohms, all channels driven. The AT6003 amplifier is also capable of delivering 450 W RMS into 4 Ω under the same conditions. These impressive figures attest to the amplifier’s ability to drive demanding speakers and accurately reproduce the subtle dynamics of high-definition recordings.

FTC Standard Compliant: Unmatched Measurement Quality

ATI is one of the few manufacturers that adheres to the very strict FTC (Federal Trade Commission) measurement standard. The signal-to-noise ratio of the ATI AT6003 amplifier reaches -128 dB at full power, ensuring exceptionally clear sound reproduction. You can thus enjoy the full dynamic range available on today’s high-definition movie and music recordings, with a stunning level of detail and realism.

Comprehensive Protection and Practical Features

The AT6000 series amplifiers are equipped with comprehensive protection against overloads, DC faults, overvoltages, and overheating. You can therefore use your amplifier with complete peace of mind, knowing that it is perfectly protected. Additionally, the amplifier’s proprietary soft-start circuit prevents any power surges when turning it on, thus preserving your speakers and ensuring optimal durability of the device.

Sleek Design and Complete Connectivity

The front panel of the ATI AT6003 amplifier features a sleek design with a single power switch. The soft-start circuit gradually powers up the amplifier to prevent any power surges during initial power-on. Once the startup process is complete, the button fully illuminates, adding a touch of elegance to the overall aesthetics of the device.

On the rear of the ATI AT6003 amplifier, you will find complete connectivity including an unbalanced RCA input, a balanced XLR input, and an input selector switch. Each channel also features a pair of gold-plated speaker outputs, ensuring optimal connection with your speakers. Additionally, the amplifier is equipped with a trigger for automatic power-on when triggered by your preamplifier, as well as a gold-plated chassis ground lug, a fuse holder, and an AC power socket for the detachable power cord.

Technical Specifications

Audio Performance

• Output Power (FTC)
  • 300 W RMS at 8 Ω
  • 450 W RMS at 4 Ω
• Frequency Response: ± 0.1 dB 20 Hz - 20 kHz
• FTC Bandwidth: +0, -3 dB 5 Hz - 100 kHz
• Phase Response: +5 to -15°, 20 Hz - 20 kHz at 1 W
• Signal-to-Noise Ratio: > 125 dB (Rated Power FTC Ref, A-weighted)
• Total Harmonic Distortion + Noise: < 0.03% (20 Hz - 20 kHz)
• Intermodulation Distortion: < 0.03%
• Crosstalk: > -80 dB (20 Hz to 20 kHz)
• Damping Factor: > 400
• Slew Rate: > 60 V/µs

Input/Output Specifications

• Input Sensitivity: 2.0 V (for full FTC power - 8 Ω)
• Input Impedance: 28 kΩ
• Recommended Load Impedance: 4 Ω to 16 Ω
• DC Output Voltage: < ±1 mV
• Voltage Gain
  • RCA Inputs: 28 dB ± 0.2 dB
  • XLR Inputs: 28 dB ± 0.2 dB

Connectivity

• 3 unbalanced inputs (RCA)
• 3 balanced inputs (XLR)
• 1 input selector
• 1 pair of gold-plated speaker terminals (per channel)
• 1 trigger input for automatic power-on
• 1 gold-plated ground terminal
• 1 power socket (IEC)

Physical Specifications

• Dimensions (W × H × D): 440 × 241 × 502 mm
• Net Weight: 43.5 kg
• Weight with Packaging: 54 kg
• Available Versions: standard front panel, rack-mount version

Power Supply

• Voltage: 120 V AC or 240 V AC (2 circuits of 15 A)
• Power Consumption
  • Standby: ≤ 0.5 W (240 V AC)
  • Idle: 85 W ±5 W