ATI Amplifier Technologies AT6004

ATI AT6004 Power Amplifier: The Perfect Alliance of Performance and Sound Quality

The ATI AT6004 amplifier uses a fully balanced Class A/B design, which means it delivers high-quality amplification while maintaining high energy efficiency. This design uses two toroidal transformers and independent secondary windings to provide separate power supplies for each channel. This configuration ensures stable power delivery and optimal channel separation, allowing for accurate and faithful reproduction of music and movie soundtracks.

ATI’s Signature Series: Benchmark Audio Performance

The ATI AT6004 amplifier is part of ATI’s Signature Series, which is renowned for its exceptional audio performance. This series uses a symmetrical circuit configuration and a single input stage with bi-differential output stages. This design approach ensures a significant reduction in noise, up to 50% less compared to traditional asymmetric designs. Moreover, by using current feedback rather than voltage, the Signature Series amplifiers offer faster response and virtually unlimited slew rate, making them ideal partners for playing back the most demanding audio and cinematic recordings.

ThermalTrak Output Devices for Optimal Performance

The Signature Series amplifiers incorporate ThermalTrak output devices that enable integrated temperature sensing with the output transistor. This innovative technology ensures real-time bias performance, resulting in a significant reduction of DC offset at the amplifier’s output. By combining these devices with dual DC servos, the Signature Series amplifiers maintain negligible levels of DC offset, ensuring accurate and distortion-free sound reproduction.

Exceptional Power and Versatility

The AT6000 series amplifiers deliver a rated power of 300 W RMS from 20 Hz to 20 kHz with a maximum total harmonic distortion (THD) of only 0.03% into 8 ohms, all channels driven. They are capable of delivering an impressive 450 W RMS into 4 Ω under the same conditions. It is worth noting that ATI adheres to the FTC measurement standard, ensuring accurate and reliable specifications. Furthermore, with a signal-to-noise ratio of -128 dB at full power, the Signature Series amplifiers can reproduce the entire dynamic range available on today’s high-definition recordings, providing an immersive and captivating listening experience.

Comprehensive Protection and Easy Operation

Advanced Protection for Peace of Mind

The AT6000 series amplifiers are equipped with advanced protection against overloads, DC faults, overvoltages, and overheating. With these built-in safety features, you can enjoy your favorite music and movies with complete peace of mind, knowing your amplifier is protected against potential electrical issues. Additionally, the ATI AT6004 amplifier features a proprietary soft-start circuit that gradually powers on the unit to avoid inrush current at startup. When the startup process is complete, the power button illuminates to indicate the amplifier is ready to deliver optimal performance.

Comprehensive Connectivity for Easy Integration

On the rear panel of the ATI AT6004 amplifier, you’ll find a wide range of connectivity options that allow you to easily connect your audio sources. It includes an unbalanced RCA input and a balanced XLR input, providing you with the flexibility to connect different types of audio sources. Plus, it features a convenient input selector switch and a pair of gold-plated speaker outputs for each channel, ensuring a stable, high-quality connection to your speakers. The rear panel also includes a trigger that automatically powers on the amplifier when triggered by your preamp, simplifying your audio system.

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
• Input Sensitivity (8 Ω): 2.0 V
• Slew Rate: > 60 V / µs

Electrical Specifications

• Signal-to-Noise Ratio: > 125 dB (FTC Rated Power, A-weighted)
• Total Harmonic Distortion + Noise: < 0.03% (20 Hz - 20 kHz)
• Intermodulation Distortion: < 0.03%
• Damping Factor: > 400
• Crosstalk: > -80 dB (20 Hz - 20 kHz)
• Voltage Gain
  • RCA Inputs: 28 dB ± 0.2 dB
  • XLR Inputs: 28 dB ± 0.2 dB
• Input Impedance: 28 kΩ
• Recommended Load Impedance: 4 Ω to 16 Ω
• Output DC Offset: < ± 1 mV

Connectivity

• 4 Unbalanced Inputs (RCA)
• 4 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: 54 kg
• Weight with Packaging: 59 kg
• Available Versions: Standard Front Panel, Rack-Mount Version

Power Supply

• Voltage: 120 V AC or 240 V AC (2 × 15 A circuits)
• Standby Power Consumption: ≤ 0.5 W (240 V AC)