Class A MOSFET Amplifier 2SK1058

This weblog discusses electronic circuit schematics, PCB design, DIY kits, and electronic project diagrams. It features a simple Class A MOSFET amplifier using the 2SK1058 component. The circuit operates with a 24V supply voltage at high current. It incorporates a Class A tube preamp based on the 12AU7, producing high-quality sound. Although the distortion levels are unknown, the amplifier is noted for its fine and delicate texture quality. It is recommended to use a one-watt speaker output efficiently. The design performs better than expected, particularly with a 12-inch bass speaker housed in a 63-liter enclosure, functioning as a three-way system.

The described circuit utilizes a Class A MOSFET amplifier, specifically employing the 2SK1058, which is known for its high linearity and low distortion characteristics. The amplifier is powered by a 24V supply, which is essential for achieving the necessary high current required for optimal performance. The use of a Class A tube preamp, based on the 12AU7, enhances the audio quality by providing a warm and rich sound signature, which is particularly desirable for audiophiles seeking fidelity in their listening experience.

The circuit's design emphasizes simplicity, making it accessible for DIY enthusiasts. The output stage of the amplifier is designed to deliver one watt of power, which is sufficient for driving small speakers efficiently. The recommendation for a one-watt output suggests that the amplifier is intended for use in smaller listening environments or as part of a larger audio system where it can be paired with more powerful amplifiers.

The performance of the amplifier is further enhanced by its integration with a well-designed speaker system. The mention of a 12-inch bass speaker in a 63-liter enclosure indicates a focus on achieving a balanced frequency response, particularly in the lower register. The three-way speaker design allows for a more comprehensive sound reproduction, with dedicated drivers for bass, midrange, and treble, contributing to an overall improved listening experience.

In summary, this circuit represents a practical and efficient design for those interested in building their own audio amplification systems, combining the benefits of MOSFET technology with the warmth of tube amplification, all while maintaining a focus on sound quality and efficiency.Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This is simple class A MOSFET amplifier 2SK1058 used in the circuit. It is easy to do, you should use a 24V supply volt at high current. using amplifier with Class A tube preamp based on 12AU7. It produces the purest sound. I have no idea of the levels of distortion, but has a very fine and delicate texture quality. With only one watt speaker output should be used efficiently. Lower is better than expected and the stage design of the units of my 12 "base 63L 3-way speakers with ease. 🔗 External reference