字串4
元件的选择： 字串3
R1-18=47K R15-16-32-33=150K C12-13-25-26=100nF 100V MKT R2-19-13-29=270R R17-34=100R TR1-2=220R trimmer R3-20=1K C1-14=1uF 100V MKT D1-2-3-4=1N4148 R4-5-21-22=150R C2-15=220pF *See text Q1-2-8-9=BC214C [matched] R6-23=2K2 C3-16=220pF Q3-10=BC212 R7-30=82R C4-17=47nF 100V [matched] Q4-5-11-12=BC183 R8-24=68K C5-18=100nF 100V MKT Q6-13=BC640 R9-25=1M5 C6-19=470uF 25V Q7-14=BC639 R10-26=3K9 C7-20=100uF 16V IC1=TL072 - NE5532 R11-27=2K7 C8-9-21-22=47uF 25V J1-2-4-5=Female RCA cinch R12-28=33K C10-23=2.2uF 100V MKT J3=3pin connector 2.54mm step R14-31=33K C11-24=1nF 100V [matched] All Resistors is 1/4W 1% metal film