ATI Amplifier Technologies AT4002
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ATI AT4002 Power Amplifier: Exceptional Power for the Ultimate Audio Experience
When it comes to high-end home theater and hi-fi audio systems, the power amplifier plays a crucial role in delivering an exceptional sound experience. In the quest for top-tier audio performance, the ATI AT4002 power amplifier stands out with its advanced design and cutting-edge technical specifications. In this article, we will present in detail this power amplifier from the AT40 series that will allow you to surpass your expectations and fully enjoy your most demanding speakers.
Exceptional Output Power for Uncompromising Audio Performance
The ATI AT4002 power amplifier is specially designed to efficiently power all types of speakers, regardless of their requirements. With a real output power of 200 W per channel into 8 ohms, and up to 300 W per channel into 4 Ω in class AB, it offers sufficient power reserves to reproduce the most subtle nuances and dynamic passages of your favorite music and movies. The AT4002 guarantees an immersive and authentic audio experience, unleashing the full power and emotion of your audio content.
Fully Symmetrical Dual Mono Design for Precise Sound Reproduction
The AT4002 amplifier adopts a fully symmetrical dual mono design, meaning each channel has its own toroidal transformer and independent secondary windings, allowing for separate power supplies for each channel. This configuration ensures precise, uncompromised sound reproduction by minimizing interference and disturbances between channels. With this advanced design, you benefit from an expanded soundstage, increased clarity, and exceptional instrument separation, allowing you to experience every musical detail with remarkable precision.
A Signature Series Pushing the Boundaries of Audio Performance
ATI’s Signature Series dual mono amplifiers are renowned for their excellence in audio performance. By utilizing a symmetrical circuit configuration, this Signature Series takes advantage of the benefits of symmetrical designs while reducing noise by half. The bi-differential output stages, combined with current feedback rather than voltage feedback, allow the Signature Series amplifiers to respond quickly with virtually unlimited slew rate. This unique feature ensures faithful reproduction of the most demanding musical and cinematic recordings, allowing you to experience an immersive and captivating audio experience.
Real-Time Bias Performance and DC Offset Reduction
The amplifiers in the Signature series feature ThermalTrak output devices, offering an integrated temperature sensing process with the output transistor. This innovative technology enables real-time bias performance, ensuring optimal stability and consistent performance regardless of temperature variations. Additionally, these amplifiers are equipped with dual DC servos that reduce DC offset at the output to insignificant levels. As a result, you benefit from exceptional audio quality, without distortion or interference, for an immersive and uncompromising listening experience.
Remarkable technical specifications for precise sound reproduction
The AT4000 series amplifiers offer impressive technical specifications for precise and detailed sound reproduction. With a rated power of 200 W RMS from 20 Hz to 20 kHz and a maximum THD of only 0.03% under 8 ohms, these amplifiers are designed to deliver exceptional audio quality across a wide frequency range. They also provide 300 W RMS at 4 Ω under the same conditions, meeting the demands of the most power-hungry speakers. Moreover, each amplifier in the Signature series complies with the strict FTC measurement standard, with a signal-to-noise ratio of -126 dB at full power, ensuring faithful reproduction of the dynamic range of your high-definition audio recordings.
Rigorous manufacturing quality for exceptional durability
At ATI, manufacturing quality is an absolute priority. Each ATI amplifier undergoes a unique and rigorous testing procedure, ensuring that each amplifier will last for many years with minimal maintenance. This procedure includes several stages, from visual inspection of printed circuit boards to in-depth performance tests for each function and parameter. Additionally, each amplifier undergoes extreme stress tests to detect any potential component failures. Finally, critical listening and a final functional test are performed to ensure that each ATI amplifier delivers exceptional audio performance and lasting quality.
Connectivity and features for easy integration into your audio system
The ATI AT4002 amplifier offers convenient connectivity and features for easy integration into your audio system. On the rear of the amplifier, you’ll find an unbalanced RCA input, a balanced XLR input, and an input selection switch, allowing you to easily connect your favorite audio sources. Additionally, each channel features a pair of gold-plated speaker outputs for a solid and reliable connection to your speakers. The amplifier is also equipped with a trigger to automatically turn on the amplifier when your preamplifier is activated, as well as a chassis ground lug, fuse holder, and power socket for the detachable power cord. All these features are designed to facilitate the use and integration of the amplifier into your existing audio system.
Documentation
Technical Specifications
Audio Performance
- FTC Output Power (full bandwidth)
- 200 W RMS at 8 Ω
- 300 W RMS at 4 Ω
- Frequency Response: ± 0.1 dB from 20 Hz to 20 kHz
- FTC Bandwidth: +0, -3 dB from 5 Hz to 100 kHz
- Phase Response: +5° to -15°, 20 Hz - 20 kHz at 1 W
- 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%
- Crosstalk: > 80 dB from 20 Hz to 20 kHz
- Damping Factor: > 400
Electrical Specifications
- 2-channel power amplifier
- Input Sensitivity: 1.6 V (for maximum FTC output power at 8 Ω)
- Voltage Gain: 28 dB ± 0.2 dB (RCA and XLR inputs)
- Slew Rate: > 60 V/µs
- Input Impedance: 28 kΩ
- DC Output Voltage: < ± 1 mV
- Recommended Load Impedance: 4 Ω to 16 Ω
Connectivity
- 2 unbalanced inputs (RCA)
- 2 balanced inputs (XLR)
- 1 input selector
- 1 pair of gold-plated speaker terminals per channel
- 1 trigger input for automatic power-on via preamplifier
- 1 gold-plated ground terminal
- 1 removable power socket (IEC)
General Specifications
- Power Supply: 120 V or 240 V AC, 20 A circuit
- Standby Power Consumption: ≤ 0.5 W (240 V AC)
- Dimensions (W × H × D): 440 × 197 × 457 mm
- Weight
- Net: 23.1 kg
- With packaging: 35 kg
- Available in standard or rack-mount version
- Eco-contribution included in the sale price.






