An application, which is considered, of very good quality sound since the entrance transistors are working at Class A. The quality of sound depends to a large extent on IC1, which must be of good quality. It can be chosen from several IC with the best from the point of cost efficiency the proposed NE 5534 (NE 5532 for stereo construction) and the series TL071 (TL072) for greater input impedance. This particular application can be used with very good results and as driver headphone with higher 47R impedance. The amplification can be changed and adapted to the amount we want, if changing the feedback resistors R6/R7.
Part List
R1 = 47K
R2 = 1K
R3 = 5.6K
R4-5 = 47K
R6-7 = 10 Ohm
R8 = 100 Ohm
C1 = 1uF 100V MKT
C2 = 100pF ceramic
C3-5 = 100nF 63V MKT
C4-6 = 47 uF 25V
D1,2,3 = 1N4148
IC1 = TL071 – NE5534
Q1 = BC550C
Q2 = BC560C
J1 = 10 pin connector
An application, which is considered, of very good quality sound since the entrance transistors are working at Class A. The quality of sound depends to a large extent on IC1, which must be of good quality. It can be chosen from several IC with the best from the point of cost efficiency the proposed NE 5534 (NE 5532 for stereo construction) and the series TL071 (TL072) for greater input impedance. This particular application can be used with very good results and as driver headphone with higher 47R impedance. The amplification can be changed and adapted to the amount we want, if changing the feedback resistors R6/R7.
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