Fosi Audio M04 Mono Amplifier

The Fosi Audio M04 Mono Amplifier is a compact yet powerful solution for driving a single subwoofer or passive speaker with exceptional clarity. Designed for audiophiles and DIY enthusiasts alike, this amplifier brings high-fidelity performance to a variety of setups, from home cinema systems to custom audio installations. Its robust build and efficient operation make it an ideal choice for those seeking to enhance low-frequency reproduction without compromising on space or energy consumption.

This versatile amplifier excels in applications where precise bass control is paramount. Whether you are integrating it into a dedicated subwoofer system, upgrading a bookshelf speaker setup, or building a portable sound rig, the M04 delivers consistent, clean power. The adjustable crossover frequency, ranging from 20 Hz to 200 Hz, allows seamless integration with existing speakers, ensuring a smooth transition between frequency ranges. Additionally, the automatic turn-on sensitivity of 0.6 volts simplifies setup, making it suitable for both professional and hobbyist use.

At the heart of the M04 lies the TPA3116 chip, a Class D amplifier topology renowned for its efficiency and low distortion. With a signal-to-noise ratio of 102 dB, audio reproduction remains pristine, free from unwanted noise or hiss. The amplifier supports a minimum load of 2 to 8 ohms and operates on a DC power supply of 12 to 24 volts, offering flexibility for various power sources. Its compact dimensions—57 x 103 x 43 mm—allow for easy placement in tight spaces, while the frequency response covers both sub-bass (20 Hz–200 Hz) and full-range (20 Hz–20 kHz) applications.

In summary, the Fosi Audio M04 Mono Amplifier combines technical precision with practical design, delivering reliable, high-quality audio amplification for any mono speaker or subwoofer project. Its blend of performance and affordability makes it a standout choice in the power amplifier category.