390 ohm — 2W R13……………………… | |
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4700uF-16v electrolytic C19, C22 …………………… |
LF357N, not fake LF357H metal, LF157, LF257 U3…………… | 7 pF ceramic-high quality C11……………………………… |
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10K R4, R14, R20 ………… |
5 high quality push button mounted box mode Contact PCB…………………………… | 18pF ceramic C4, C5, C7, C8, C9, C14 ………… |
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100 ohm R11, R12 …………………… | L7805CV, high quality of 5V regulator U4…………… |
10uF-16v electrolytic C2, C3 …………………….