It is believed that the technology of class D amplifiers was born back in 1955. Nevertheless, this technology was not widely used, because it was impossible to create high-quality sound on the element base of those years.
The development of modern silicon technology has given a second life to class D amplifiers. The circuitry of these amplifiers provides a significantly higher damping coefficient in comparison with class AB and other circuitry solutions. This not only guarantees stable operation with complex loads, fast, clear bass and a large dynamic range, but also provides a lower level of distortion, the absence of porridge, a sluggish attack or blurring of the fronts, and most importantly, the amplifier’s ability to equally cope with completely diverse music.
We bring to your attention a powerful stereo amplifier in class D on a TDA7498E chip from STM. The maximum power of this amplifier is 2x160 watts per 4 ohms or 220 watts in mono bridge mode at 3 ohms.
Supply voltage 15-36V with a current of at least 4A
The board is equipped with a radiator with a fan. The fan turns on only when a high temperature is reached.
Subjectively, this amplifier turned out to be of very high quality. Compared to class AB, it clearly wins in terms of bass. To hear the advantages of a high-quality AV class on midrange and treble over this amplifier, the source and acoustics must be of a sufficiently high level.
This TDA7498E amplifier can be recommended for building a powerful entry-level or mid-range audio system.