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楼主 |
发表于 2018-1-2 08:32
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'KD mester' really designed a good amplifier, which can be compared with any industrial high-end product, with good and listenable sound without any coloration.
The schematic can be seen on Figure 1. Is a symmetrical design without overall negative feedback, but several local feedbacks ensuring the high linearity. Such topology is used by high-end amplifier manufacturers, like Hungarian Etalon.
The power stage are made by triple-Darlington, formed by Q6-Q8 and Q7-Q9 (TIP122 and TIP127 are Darlington transistors), to decrease the negative effect on voltage amplifiers high impedance output caused by power transistors distorted base current. For that reason the input resistance of power stage will be high with high linearity, and easy to be driven.
The author remarks the components must be same as he indicated, because that gives best results, tested with long listening experience. He highly recommends being used especially same type of power transistors (MLJ21193 and MLJ21194)! Basically |
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