r1 100k Log r2,r4,r5 22k r3 10k r6 15k r7 4,7k r8 1k r9 3,9k r10,r11 470ohm r12,r13 10ohm 1w c1,c6 33u + C2 10u c3 10u c4,c7 470u c5 100u c8,c9 100p + d1,d2,d3 1n4148 q1,q4 2n3906 q2 mpsa12 q3 2n3904 q6 tip41 q5 tip42