Preamp + Tone Control Circuit Using Transistor

This circuit is a circuit diagram preamp and tone controls are combined in a single series. Series preamp and tone controls are using the transistor as a control. In the picture below P1 to control the volume level, to control the level of P2 and P3 for Bass control Treble level. This circuit is a circuit diagram mono channel, built a similar circuit to make this circuit stereo. The following is a schematic drawing:

Component:

R1__________220K
R2__________100K
R3__________2K7
R4 R5_______8K2
R6__________4K7
R7, R8, R13___2K2
R9__________2M2
R10, R11_____47K
R12_________33K
R14_________470R
R15_________10K
R16_________3K3



C1, C2, C9____470nF 63V

C3, C4_______47nF 63V

C5, C6_______6n8 63V

C7__________10?F 63V

C8, C10______22?F 25V

C11_________470?F 25V



Q1, Q3_______BC550C Low noise NPN 45V 100mA High gain

TransistorsQ2__________2N3819 General-purpose N-Channel FET