Mosfet Single-Ended (SE) Class A JFET Input Power
Amplifiers utilize high-impedance, low-noise JFET front-ends (like 2SJ74BL
or 2SJ109BL) combined with power MOSFET outputs for high-fidelity audio, often
featuring 30W output. These amplifiers, are
characterized by very low distortion, low noise, and require significant heat
sinking due to the inefficiency of Class A operation.