XT4.20
XT4.20
  1. XT4.20
  2. XT4.20

XT4.20

The XT series class TD professional amplifier (It usually refers to the Class D power amplifier that uses Tripath’s patented chip technology.) Its core feature is based on the high-efficiency architecture of Class D power amplifiers. It optimizes sound quality through unique modulation technology, balances efficiency and listening experience, and represents an optimized upgrade of Class D power amplifiers in terms of sound performance.

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Output power 8Ω Stereo power 2000W x 4 / 4Ω Stereo power 3600W x 4 / 8Ω Bridge power 4000W x 2
Frequency response 15Hz~20kHz (±1dB)
THD+N <0.1% Rated power @8Ω 1KHz
Signal to Noise Ratio ≥100dB (A-weighted)
Input sensitivity 0.775V/1.0V/1.2V/1.4V
Input impedance Balanced>20KΩ/Unbalanced>10KΩ
Slew Rate >25V/us
Damping factor ≥400@8Ω 1KHz
Crosstalk >60dB@8Ω 1KHz
Output circuitry Class-TD
Circuit protection Soft start/Anti-shock/DC/Short circuit/Overheating、Overload/Clipper limiter
Front panel control Power switch (Power) /LED:Power (ON)、Signal (-3dB/-6dB/-12dB/-18dB/-25dB)、Clipping (Clip)、Protection (Protect) /Volume control(CH1.2.3.4)
Rear panel control Power input/Fast recovery fuse/Working mode+Sensitivity selection/XLR input+LINK output/Terminal+Speakon Power output/Fan cooling
Supply voltage AC220V(50Hz~60Hz)
Power fuse 60A
Net/Gross weight 36.8kg/41.7kg
Size(W×D×H) Product:482mm×475mm×88mm/Carton:610mm×600mm×168mm

 

Its characteristics are as follows:

  1. High Efficiency Energy Saving: It retains the essential switching amplification feature of Class D power amplifiers, with an energy conversion rate of 80% to 90%—far higher than the approximately 50% efficiency of Class AB power amplifiers. It also has low quiescent power consumption and generates little heat during operation, complying with energy-saving standards. Thus, it is suitable for long-term powered-on systems such as audio and video systems.

  2. Sound Quality Improvement: It adopts Tripath’s patented digital processing technologies (such as PWM, PDM or similar modulation methods), which reduce the switching distortion (SSD) and electromagnetic interference (EMI) of Class D amplifiers, and quickly track the transient response of audio signals. The optimized feedback control circuit and carefully designed filter significantly improve the total harmonic distortion (THD) and noise (N) in the mid-to-high frequency range, enabling accurate reproduction of audio signals. The listening experience is closer to that of high-quality Class AB analog power amplifiers, meeting the high requirements of professional audio systems for sound reproduction accuracy.

  3. High Integration: The core chip features high-density integration, with simple peripheral circuits and a lightweight overall design. It can also provide greater power output and can be integrated into professional audio and video systems with limited space.

  4. Wide applications: It offers flexible output power options (supporting a wide load impedance range of 2Ω-8Ω), featuring high efficiency, low distortion, and pure, clear sound quality. It can be widely used in concerts, theaters, recording studios, party venues, bars, small and medium-sized conferences, small-scale monitoring, and home theaters. With its small size and light weight, it is convenient to install, transport, and move, making it suitable for mobile performances, commercial promotions, and other scenarios.

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