Electronics Projects, Class A Tube Headphone Amplifier Circuit Mosfet Hybrid article
"audio amplifier circuits, transistor amplifier, " tagged with
Headphone Amplifier Circuit simply have a design or even the first single MOSFET as the design begins after two MOSFETs used and 6n6p ecc99 lamp Adding the lamp operating voltage 70 … 80V inter-addition for the MOSFETs 18 … 20v voltages required. The second box of the amplifier are also very well designed. Hybrid schemes belonging to the amp, PCB materials list.
Source: republika.pl/audioton/index.htm alternative link: class-a-tube-headphone-amplifier-circuit-mosfet-hybrid.rar