Portable guitar headphone circuit

Portable guitar headphone circuit

Portable guitar headphone circuit

I built a portable headphone amplifier for testing purposes

Headphone amp circuit using :

R1 = 10K
R2 = 100K
R3 = 68K
R4 = 1.5K
R5 = 3.3K
R6 = 330R
R7 = 4K7
R8 = 2.2R
C1 = 1µF-63V
C2 = 100µF-25V
C3 = 470µF-25V
Q1 =  BC239C
Q2 =  BC337
Q3 =  BC327

B1 = 3V 1.5V AA