70W HI-FI Death of Zen Amplifier

I wanna point out that this is the ultimate amplifier. Given the specs it should sound amazing. It lacks safety protection circuitry though so be careful not to short the output because the power transistors will most surely fry. Will be posting another circuit for the preamp for this amplifier and the power supply for the preamp. Gonna call it Hi-Fi Preamp For Death of Zen. Based on the famous advanced Death of Zen class A amplifier 71W topology. The specs are: - Input sensitivity - 1.2V - Input impedance - 24K - Output impedance - 4ohm/8ohm - Frequency response - 10Hz-20Khz. The upper boundary may be extended by decreasing the value or removing the 2 100pF capacitors. Without them the frequency response increases to more than 1Mhz but with some attenuation. - Output power - 71W/4ohm RMS maybe as twice as high for musical power. - Power Draw - 240W (average) - Efficiency - 28% - THD+N - almost unmeasurable - 0.04% @ 1Khz/77W at ideal conditions but giving a safety margin of error for transistor noise, preamp noise, power supply noise and noise from parasitic influences I bet the real THD level should be somewhere around ~ 0.1% - 0.15% which is really not bad for an amp this simple at maximum power of 80W.

published 10 years ago