Hello everyone, i'm planing to build my first headphone amplifier and i need your opinions about this schematics. Power supply should be 12vDC, because i don't have any other transformers. Chip is NE5534 and BC639 - BC640 transistors. My headphones is 32ohm.
Full link to schematics and review: Simple Quality Headphone Amplifier 12V NE5534AN - Electronics Projects Circuits
Full link to schematics and review: Simple Quality Headphone Amplifier 12V NE5534AN - Electronics Projects Circuits
The output, BC639+BC640 works in Class B.
THis makes it have a lot of distortion.
The THD of the circuit as a whole is quite high, I'm afraid.
THis makes it have a lot of distortion.
The THD of the circuit as a whole is quite high, I'm afraid.
Assuming you fix the biassing issue that @lineup has highlighted, you'll be wanting a cap across the rails of both the opamps (470uF/16V would be the minimum I reckon). Also 470uF output caps are a little low-valued, up those to 1500uF.
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