Three Channel Audio Splitter

This circuit is suitable to amplify and distribute the audio signals. The input audio signal is applied to the J1 and after passing through the P1, It is buffered and amplified by the IC1 prepared to redistribute. It has 3 outputs to drive 3 audio lines with 300 ohms impedance.

Circuit Diagram:

Parts:

J1 = RCA Socket (See Notes)

P1 = 100K-Potentiometre

R* = 10K-100K

R1 = 560K

R2 = 1K

R3 = 2.2K

R4 = 2.7K

R5 = 2.7K

R6 = 330R

R7 = 330R

R8 = 330R

C1 = 100uF-25V

C2 = 100uF-25V

C3 = 100uF-25V

D1 = BZX79C18

D2 = BZX79C18

Q1 = BC337

Q2 = BC327

IC1 = NE5532-34

Notes:

• J1 will be RCA Audio input female socket.
• R* is on your choice it can be choose between 10K to 100K resistor.
• Output capacitor’s value is between 100uf to 470uf and power handling is 25V to 50V.
• You can power up this circuit via +12V/-12V regulated supply but you have to remove following parts Q1-Q2-C2-C3-D1-D2.
• Maximum power ratings +35V/-35V