Wiparat Circuit Electronics

This is an improved version of headphone amplifier I’ve built many years ago. I wanted so much to share it with you because this simple circuit has done a great service to me through all these years. It is very simple and reliable, hard to break, offers a lot of power, excellent sound quality, it [...]

Notes:
* Can be directly connected to CD players, tuners and tape recorders.
* Tested with several headphone models of different impedance: 32, 100, 245, 300, 600 & 2000 Ohm.
* Old 8 Ohm impedance headphones can be also driven, but these obsolete devices are not recommended.
* Schematic shows left channel and power supply (common to both channels).
* [...]

Notes:
* Can be directly connected to CD players, tuners and tape recorders.
* Tested with several headphone models of different impedance: 32, 100, 245, 300, 600 & 2000 Ohm.
* Schematic shows left channel only.
* B1, SW1, J1 & C3 are common to both channels.
* R3 value was calculated for headphone impedance up to 300 Ohm. Using [...]