paroxod4

Hello. I upgraded the amplifier on a green board from Kevin Gilmour (as recommended alexcp) and compared it with the big black Chinese road (the circuits are the same). There are differences, but so far they are insignificant (I compare them on headphones, hereinafter as preliminary). The fact that now it is not heated like an iron is a big plus. After 2 hours of wiretapping, the preference is of course the reworked one.

The maximum that I could for the Kelvin board, 30/31 beta -122/136, respectively. There are 32/33 even worse, 113/179, but they are on a black expensive Chinese board, I bought it in the case, the sound is good.

According to the scheme: Q23-Q24, Q25-Q26? Q23-Q25, Q24-Q26? Or pick up the whole four?

Привет всем, пожалуйста, скажите мне, какие пары выходного каскада лучше выбрать, если это возможно по схеме. Hello everyone, please tell me which pairs of the output stage are better to choose, if possible according to the scheme.

Pars Thank you so much for such a detailed answer. Mullet Thank you for the link.

Mullet Input field effect transistors 2N5564 affect the constant component of the output of the amplifier, and not the quiescent current of the output stage.

Please give a link to a good seller for 2n5564-5566 on ebay. Input assemblies affect the constant voltage at the output, the less it is without an integrator, the more likely it is that transistors are not fake. I have a lot of original BF256C, so I asked about the possibility of using them.

2SK389 / LSK389 or 2x2SK170BL everywhere Chinese fake, BF256C-original.

Hello, is it possible to use BF256C field-effect transistors from PHILIPS at the input?