The final schematic for 2 channels
List of components:
R1,R3,R14,R15 = 4.7 ~ 10ohm
R3,R9 = 50 ~ 600 ohm
R5,R13 = 9.1 Kohm
R6,R10 = 25.5 KOhm
R7,R11 = 511 Ohm
R4,R12 = 9.1 KOhm
R8 = 5.6KOhm
C4,C5,C8,C10 = 10 ~ 100 uF/25V
C2,C3,C7,C9 = 10 ~ 100 nF
OP1, OP2 = OPA637 or any other high quality OpAmp with jfet input and the same pinout.