Two tube OTL amplifiers 02

It is a well-known fact that the performance of the insulator is closely related to the quality of the output transformer . Overseas equipment
products also include so-called tube OTI-amplifiers that simply eliminate the output transformer . The amplifiers
    shown in Figure 1-31 and Figure 1-32 are two of these products. Both tubes are domestic products, and the circuits are basically the same. The difference is the model of the power tube, Figure 1.31 uses 6P13P; Figure 1-32 uses 6C19, and 6N1 is used for the inverter and voltage amplification parts. 9 As commercial equipment, the most important thing is to introduce new things, so replace them like this The practice of setting up a separate model of power tube can be used as a reference for audio enthusiasts