Really beautiful sounding push module 02

Schematic diagram of a homemade amplifier. The downstream circuit is no different from the ordinary circuit, except that a buffer is added in front of K214/J 7 7. This is because the input capacitance of the power tube in MOS
such as K214 is large, which is different from the module's output resistance of tens of kiloohms. It will form a low-pass filter, which will affect the frequency response and transient response of the entire circuit. When some domestic publications introduce the application of tubes such as K214, they only introduce the need to operate at large currents and consider the influence of their input capacitance , which is somewhat inappropriate. The operating current of 2SK 214 and J77 in this circuit is also above 100mA, so these two tubes must be installed on a large radiator.