ESD electrostatic protection tube 5V two-way 0201
MOS tube spot ESD
6N8 vacuum tube preamplifier circuit
In general, the sound of this pre-daring is still good, basically achieving the goal of improving the "digital flavor" of CD sources.
The working point of the machine is basically consistent with the drawing, B1 point is 241V, B+2 point is 204v, and Hangzhou WY-2P and WY-3P are used for voltage regulator.
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