Dayton Audio SPA300-D Subwoofer Plate Amplifier

The Dayton Audio SPA300-D 300 Watt Class-D Subwoofer Plate Amplifier is a compact yet powerful solution for achieving deep, accurate bass in your custom subwoofer enclosure. Designed for audiophiles and DIY enthusiasts alike, this amplifier delivers exceptional performance without occupying excessive space. Whether you are building a dedicated home theatre system, upgrading a car audio setup, or constructing a high-fidelity music reproduction system, the SPA300-D provides the clean, controlled low-end response that brings your audio to life. Its versatile power supply accepts 115 to 230 VAC, making it suitable for use in various regions and installations.

Technically, this amplifier boasts a robust 300-watt Class-D output stage, ensuring efficient power delivery with minimal heat generation. The signal-to-noise ratio of 101 dB guarantees a remarkably quiet background, allowing subtle bass details to shine through. With a frequency response spanning 20 to 200 Hz, it is perfectly tailored for subwoofer applications, while the input sensitivity of 200 mV ensures compatibility with a wide range of source equipment. Total harmonic distortion remains below 1.5%, preserving audio integrity even at high output levels. Housed in a compact 18 x 6 x 21 cm chassis, the SPA300-D integrates seamlessly into your enclosure, offering a professional-grade solution for bass reproduction.