APA4300c inherits classics and displays exquisite sound

  Britain's glorious age, which was deeply influenced by bands and rock culture, is no longer in existence. In fact, for Cantonese pop songs, the time when gods fight has long passed. Even a lot of the new generation have just discovered the glorious era of pop music recently. The familiar melodies are all from Japan. Japan's music definitely plays an important role in the development of music culture. In the automotive sound industry, consumers may prefer to be famous brands in Europe and the United States, but as long as we talk about Japan's car audio giants, they will be awed.

  Four channel power amplifier has always been an important part of audio refitting system. Whether new players or experienced veteran guns, they will pay special attention to the  four channel power amplifier. This issue is the new product apa4300c four way power amplifier of addzest brand in 2020. With more than 70 years of professional experience in automobile audio manufacturing, addzest has been the main supplier of audio components for Japanese car manufacturers. At the same time, it has been active in various professional automotive audio fields, and the products developed and produced have excellent quality. Since 1948, we have accumulated rich experience, which makes the system using addzest products have a qualitative leap!

  Iconic sunken whale

  The apa4300c fuselage has a very heavy brand design element style, which not only enables consumers to have higher recognition, but also becomes a brand in the hearts of consumers, just like the family facial makeup of automobile manufacturers. In addzest's product lines, from power amplifiers to audio processors, as long as they are non speaker products, this dark gray metal heat sink is densely covered with fuselage design. In the center is the classic concave whale shape logo, which is printed with "addzest" trademark. On the left is the ventilation and heat dissipation grid, and a group of three LED indicators.

  Both sides of the wiring panel design, the machine has flexible installation layout versatility, convenient wiring and wiring. From the front-level control and input side, the symmetrical two-sided design is adopted, which are 1,2-channel and 3-channel and 4-channel groups respectively. 1. High pass and all pass can be selected for 2-channel pre-stage signal processing, and high-pass, low-pass and all-pass can be selected for 3-4-channel pre-stage signal processing, high-pass 50-1 kHz and low-pass 40 Hz-200 Hz can be adjusted, and 0-12 DB bass gain can be selected. Both groups of signal processing have independent gain adjustment. In the center of the panel is the power indicator.

  The upper layer of horn signal output on one side of the output end is 3 and 4 channels, 3 and 4 channels can also be bridged, and the lower layer is 1 and 2 channels; the right side is the power interface and fuse. Take apart the base plate, you will find that apa4300c class AB circuit strictly selects high-quality components and efficient PCB panel. The large annular coil in the left power supply part has four capacitors in the middle. A cooling fan is set between the fire cow and the capacitor to improve the heat dissipation capacity. On the right side is the front stage signal and signal processing part, class AB power amplifier architecture. For details, apa4300c has two independent symmetrical designs for 1 and 2 channels, 3 and 4 channels, which can greatly reduce the mutual interference during signal processing, and the sound quality is more pure. The distortion is controlled at about 0.15%, and the signal-to-noise ratio is more than 90dB. As a power amplifier with sound quality, the resistance can be 2-8 Ω. Under the normal 4 Ω load, each channel of four channels has stable 75W output.
At present, the trend of car audio refitting is to achieve high efficiency, stable output and save power consumption, and at the same time, it is necessary to meet the demand and bring high-level sound effect. In fact, the power amplifier not only focuses on the material, but also depends on the design details. Good anti shielding and anti-interference can provide stable and pure sound quality to the maximum extent. From addzest's apa4300c four way power amplifier, we can see the intention of Japanese products in this respect.

  Addzest apa4300c four channel power amplifier / rated power: 4CH × 40W@8 Ω、4Ch× 75W@4 Ω、4Ch× 150W@2 Ω / SNR: > 90dB / thd distortion: < 0.15% / low pass filter: 40hz-220hz / input sensitivity: 200mv-8v